257946660

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1$

素因数の和:879

約数の個数: 192

約数和(自身を含む): 873062400

約数和(自身を除く): 615115740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 31, 36, 38, 45, 54, 57, 60, 62, 76, 90, 93, 95, 108, 114, 124, 135, 155, 171, 180, 186, 190, 228, 270, 279, 285, 310, 342, 372, 380, 465, 513, 540, 558, 570, 589, 620, 684, 811, 837, 855, 930, 1026, 1116, 1140, 1178, 1395, 1622, 1674, 1710, 1767, 1860, 2052, 2356, 2433, 2565, 2790, 2945, 3244, 3348, 3420, 3534, 4055, 4185, 4866, 5130, 5301, 5580, 5890, 7068, 7299, 8110, 8370, 8835, 9732, 10260, 10602, 11780, 12165, 14598, 15409, 15903, 16220, 16740, 17670, 21204, 21897, 24330, 25141, 26505, 29196, 30818, 31806, 35340, 36495, 43794, 46227, 48660, 50282, 53010, 61636, 63612, 72990, 75423, 77045, 79515, 87588, 92454, 100564, 106020, 109485, 125705, 138681, 145980, 150846, 154090, 159030, 184908, 218970, 226269, 231135, 251410, 277362, 301692, 308180, 318060, 377115, 416043, 437940, 452538, 462270, 477679, 502820, 554724, 678807, 693405, 754230, 832086, 905076, 924540, 955358, 1131345, 1357614, 1386810, 1433037, 1508460, 1664172, 1910716, 2080215, 2262690, 2388395, 2715228, 2773620, 2866074, 3394035, 4160430, 4299111, 4525380, 4776790, 5732148, 6788070, 7165185, 8320860, 8598222, 9553580, 12897333, 13576140, 14330370, 17196444, 21495555, 25794666, 28660740, 42991110, 51589332, 64486665, 85982220, 128973330, 257946660]

約数ペア:

[(1, 257946660), (2, 128973330), (3, 85982220), (4, 64486665), (5, 51589332), (6, 42991110), (9, 28660740), (10, 25794666), (12, 21495555), (15, 17196444), (18, 14330370), (19, 13576140), (20, 12897333), (27, 9553580), (30, 8598222), (31, 8320860), (36, 7165185), (38, 6788070), (45, 5732148), (54, 4776790), (57, 4525380), (60, 4299111), (62, 4160430), (76, 3394035), (90, 2866074), (93, 2773620), (95, 2715228), (108, 2388395), (114, 2262690), (124, 2080215), (135, 1910716), (155, 1664172), (171, 1508460), (180, 1433037), (186, 1386810), (190, 1357614), (228, 1131345), (270, 955358), (279, 924540), (285, 905076), (310, 832086), (342, 754230), (372, 693405), (380, 678807), (465, 554724), (513, 502820), (540, 477679), (558, 462270), (570, 452538), (589, 437940), (620, 416043), (684, 377115), (811, 318060), (837, 308180), (855, 301692), (930, 277362), (1026, 251410), (1116, 231135), (1140, 226269), (1178, 218970), (1395, 184908), (1622, 159030), (1674, 154090), (1710, 150846), (1767, 145980), (1860, 138681), (2052, 125705), (2356, 109485), (2433, 106020), (2565, 100564), (2790, 92454), (2945, 87588), (3244, 79515), (3348, 77045), (3420, 75423), (3534, 72990), (4055, 63612), (4185, 61636), (4866, 53010), (5130, 50282), (5301, 48660), (5580, 46227), (5890, 43794), (7068, 36495), (7299, 35340), (8110, 31806), (8370, 30818), (8835, 29196), (9732, 26505), (10260, 25141), (10602, 24330), (11780, 21897), (12165, 21204), (14598, 17670), (15409, 16740), (15903, 16220)]