640043820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{6361}}^1$

素因数の和:6432

約数の個数: 144

約数和(自身を含む): 2139769632

約数和(自身を除く): 1499725812

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 43, 45, 52, 60, 65, 78, 86, 90, 117, 129, 130, 156, 172, 180, 195, 215, 234, 258, 260, 387, 390, 430, 468, 516, 559, 585, 645, 774, 780, 860, 1118, 1170, 1290, 1548, 1677, 1935, 2236, 2340, 2580, 2795, 3354, 3870, 5031, 5590, 6361, 6708, 7740, 8385, 10062, 11180, 12722, 16770, 19083, 20124, 25155, 25444, 31805, 33540, 38166, 50310, 57249, 63610, 76332, 82693, 95415, 100620, 114498, 127220, 165386, 190830, 228996, 248079, 273523, 286245, 330772, 381660, 413465, 496158, 547046, 572490, 744237, 820569, 826930, 992316, 1094092, 1144980, 1240395, 1367615, 1488474, 1641138, 1653860, 2461707, 2480790, 2735230, 2976948, 3282276, 3555799, 3721185, 4102845, 4923414, 4961580, 5470460, 7111598, 7442370, 8205690, 9846828, 10667397, 12308535, 14223196, 14884740, 16411380, 17778995, 21334794, 24617070, 32002191, 35557990, 42669588, 49234140, 53336985, 64004382, 71115980, 106673970, 128008764, 160010955, 213347940, 320021910, 640043820]

約数ペア:

[(1, 640043820), (2, 320021910), (3, 213347940), (4, 160010955), (5, 128008764), (6, 106673970), (9, 71115980), (10, 64004382), (12, 53336985), (13, 49234140), (15, 42669588), (18, 35557990), (20, 32002191), (26, 24617070), (30, 21334794), (36, 17778995), (39, 16411380), (43, 14884740), (45, 14223196), (52, 12308535), (60, 10667397), (65, 9846828), (78, 8205690), (86, 7442370), (90, 7111598), (117, 5470460), (129, 4961580), (130, 4923414), (156, 4102845), (172, 3721185), (180, 3555799), (195, 3282276), (215, 2976948), (234, 2735230), (258, 2480790), (260, 2461707), (387, 1653860), (390, 1641138), (430, 1488474), (468, 1367615), (516, 1240395), (559, 1144980), (585, 1094092), (645, 992316), (774, 826930), (780, 820569), (860, 744237), (1118, 572490), (1170, 547046), (1290, 496158), (1548, 413465), (1677, 381660), (1935, 330772), (2236, 286245), (2340, 273523), (2580, 248079), (2795, 228996), (3354, 190830), (3870, 165386), (5031, 127220), (5590, 114498), (6361, 100620), (6708, 95415), (7740, 82693), (8385, 76332), (10062, 63610), (11180, 57249), (12722, 50310), (16770, 38166), (19083, 33540), (20124, 31805), (25155, 25444)]