31403580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 100840320

約数和(自身を除く): 69436740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 114, 130, 156, 163, 169, 190, 195, 228, 247, 260, 285, 326, 338, 380, 390, 489, 494, 507, 570, 652, 676, 741, 780, 815, 845, 978, 988, 1014, 1140, 1235, 1482, 1630, 1690, 1956, 2028, 2119, 2445, 2470, 2535, 2964, 3097, 3211, 3260, 3380, 3705, 4238, 4890, 4940, 5070, 6194, 6357, 6422, 7410, 8476, 9291, 9633, 9780, 10140, 10595, 12388, 12714, 12844, 14820, 15485, 16055, 18582, 19266, 21190, 25428, 27547, 30970, 31785, 32110, 37164, 38532, 40261, 42380, 46455, 48165, 55094, 61940, 63570, 64220, 80522, 82641, 92910, 96330, 110188, 120783, 127140, 137735, 161044, 165282, 185820, 192660, 201305, 241566, 275470, 330564, 402610, 413205, 483132, 523393, 550940, 603915, 805220, 826410, 1046786, 1207830, 1570179, 1652820, 2093572, 2415660, 2616965, 3140358, 5233930, 6280716, 7850895, 10467860, 15701790, 31403580]

約数ペア:

[(1, 31403580), (2, 15701790), (3, 10467860), (4, 7850895), (5, 6280716), (6, 5233930), (10, 3140358), (12, 2616965), (13, 2415660), (15, 2093572), (19, 1652820), (20, 1570179), (26, 1207830), (30, 1046786), (38, 826410), (39, 805220), (52, 603915), (57, 550940), (60, 523393), (65, 483132), (76, 413205), (78, 402610), (95, 330564), (114, 275470), (130, 241566), (156, 201305), (163, 192660), (169, 185820), (190, 165282), (195, 161044), (228, 137735), (247, 127140), (260, 120783), (285, 110188), (326, 96330), (338, 92910), (380, 82641), (390, 80522), (489, 64220), (494, 63570), (507, 61940), (570, 55094), (652, 48165), (676, 46455), (741, 42380), (780, 40261), (815, 38532), (845, 37164), (978, 32110), (988, 31785), (1014, 30970), (1140, 27547), (1235, 25428), (1482, 21190), (1630, 19266), (1690, 18582), (1956, 16055), (2028, 15485), (2119, 14820), (2445, 12844), (2470, 12714), (2535, 12388), (2964, 10595), (3097, 10140), (3211, 9780), (3260, 9633), (3380, 9291), (3705, 8476), (4238, 7410), (4890, 6422), (4940, 6357), (5070, 6194)]