18136860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:256

約数の個数: 144

約数和(自身を含む): 61286400

約数和(自身を除く): 43149540

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 199, 210, 217, 245, 294, 310, 372, 398, 420, 434, 465, 490, 588, 597, 620, 651, 735, 796, 868, 930, 980, 995, 1085, 1194, 1302, 1393, 1470, 1519, 1860, 1990, 2170, 2388, 2604, 2786, 2940, 2985, 3038, 3255, 3980, 4179, 4340, 4557, 5572, 5970, 6076, 6169, 6510, 6965, 7595, 8358, 9114, 9751, 11940, 12338, 13020, 13930, 15190, 16716, 18228, 18507, 19502, 20895, 22785, 24676, 27860, 29253, 30380, 30845, 37014, 39004, 41790, 43183, 45570, 48755, 58506, 61690, 74028, 83580, 86366, 91140, 92535, 97510, 117012, 123380, 129549, 146265, 172732, 185070, 195020, 215915, 259098, 292530, 302281, 370140, 431830, 518196, 585060, 604562, 647745, 863660, 906843, 1209124, 1295490, 1511405, 1813686, 2590980, 3022810, 3627372, 4534215, 6045620, 9068430, 18136860]

約数ペア:

[(1, 18136860), (2, 9068430), (3, 6045620), (4, 4534215), (5, 3627372), (6, 3022810), (7, 2590980), (10, 1813686), (12, 1511405), (14, 1295490), (15, 1209124), (20, 906843), (21, 863660), (28, 647745), (30, 604562), (31, 585060), (35, 518196), (42, 431830), (49, 370140), (60, 302281), (62, 292530), (70, 259098), (84, 215915), (93, 195020), (98, 185070), (105, 172732), (124, 146265), (140, 129549), (147, 123380), (155, 117012), (186, 97510), (196, 92535), (199, 91140), (210, 86366), (217, 83580), (245, 74028), (294, 61690), (310, 58506), (372, 48755), (398, 45570), (420, 43183), (434, 41790), (465, 39004), (490, 37014), (588, 30845), (597, 30380), (620, 29253), (651, 27860), (735, 24676), (796, 22785), (868, 20895), (930, 19502), (980, 18507), (995, 18228), (1085, 16716), (1194, 15190), (1302, 13930), (1393, 13020), (1470, 12338), (1519, 11940), (1860, 9751), (1990, 9114), (2170, 8358), (2388, 7595), (2604, 6965), (2786, 6510), (2940, 6169), (2985, 6076), (3038, 5970), (3255, 5572), (3980, 4557), (4179, 4340)]