81816660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{509}}^1$

素因数の和:590

約数の個数: 144

約数和(自身を含む): 267321600

約数和(自身を除く): 185504940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 47, 57, 60, 76, 90, 94, 95, 114, 141, 171, 180, 188, 190, 228, 235, 282, 285, 342, 380, 423, 470, 509, 564, 570, 684, 705, 846, 855, 893, 940, 1018, 1140, 1410, 1527, 1692, 1710, 1786, 2036, 2115, 2545, 2679, 2820, 3054, 3420, 3572, 4230, 4465, 4581, 5090, 5358, 6108, 7635, 8037, 8460, 8930, 9162, 9671, 10180, 10716, 13395, 15270, 16074, 17860, 18324, 19342, 22905, 23923, 26790, 29013, 30540, 32148, 38684, 40185, 45810, 47846, 48355, 53580, 58026, 71769, 80370, 87039, 91620, 95692, 96710, 116052, 119615, 143538, 145065, 160740, 174078, 193420, 215307, 239230, 287076, 290130, 348156, 358845, 430614, 435195, 454537, 478460, 580260, 717690, 861228, 870390, 909074, 1076535, 1363611, 1435380, 1740780, 1818148, 2153070, 2272685, 2727222, 4090833, 4306140, 4545370, 5454444, 6818055, 8181666, 9090740, 13636110, 16363332, 20454165, 27272220, 40908330, 81816660]

約数ペア:

[(1, 81816660), (2, 40908330), (3, 27272220), (4, 20454165), (5, 16363332), (6, 13636110), (9, 9090740), (10, 8181666), (12, 6818055), (15, 5454444), (18, 4545370), (19, 4306140), (20, 4090833), (30, 2727222), (36, 2272685), (38, 2153070), (45, 1818148), (47, 1740780), (57, 1435380), (60, 1363611), (76, 1076535), (90, 909074), (94, 870390), (95, 861228), (114, 717690), (141, 580260), (171, 478460), (180, 454537), (188, 435195), (190, 430614), (228, 358845), (235, 348156), (282, 290130), (285, 287076), (342, 239230), (380, 215307), (423, 193420), (470, 174078), (509, 160740), (564, 145065), (570, 143538), (684, 119615), (705, 116052), (846, 96710), (855, 95692), (893, 91620), (940, 87039), (1018, 80370), (1140, 71769), (1410, 58026), (1527, 53580), (1692, 48355), (1710, 47846), (1786, 45810), (2036, 40185), (2115, 38684), (2545, 32148), (2679, 30540), (2820, 29013), (3054, 26790), (3420, 23923), (3572, 22905), (4230, 19342), (4465, 18324), (4581, 17860), (5090, 16074), (5358, 15270), (6108, 13395), (7635, 10716), (8037, 10180), (8460, 9671), (8930, 9162)]