647516740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{191}}^1$

素因数の和:302

約数の個数: 144

約数和(自身を含む): 1593768960

約数和(自身を除く): 946252220

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 59, 65, 68, 85, 118, 130, 169, 170, 191, 221, 236, 260, 295, 338, 340, 382, 442, 590, 676, 764, 767, 845, 884, 955, 1003, 1105, 1180, 1534, 1690, 1910, 2006, 2210, 2483, 2873, 3068, 3247, 3380, 3820, 3835, 4012, 4420, 4966, 5015, 5746, 6494, 7670, 9932, 9971, 10030, 11269, 11492, 12415, 12988, 13039, 14365, 15340, 16235, 19942, 20060, 22538, 24830, 26078, 28730, 32279, 32470, 39884, 42211, 45076, 49660, 49855, 52156, 56345, 57460, 64558, 64940, 65195, 84422, 99710, 112690, 129116, 130390, 146497, 161395, 168844, 169507, 191573, 199420, 211055, 225380, 260780, 292994, 322790, 339014, 383146, 422110, 548743, 585988, 645580, 678028, 732485, 766292, 844220, 847535, 957865, 1097486, 1464970, 1695070, 1904461, 1915730, 2194972, 2490449, 2743715, 2929940, 3390140, 3808922, 3831460, 4980898, 5487430, 7617844, 9522305, 9961796, 10974860, 12452245, 19044610, 24904490, 32375837, 38089220, 49808980, 64751674, 129503348, 161879185, 323758370, 647516740]

約数ペア:

[(1, 647516740), (2, 323758370), (4, 161879185), (5, 129503348), (10, 64751674), (13, 49808980), (17, 38089220), (20, 32375837), (26, 24904490), (34, 19044610), (52, 12452245), (59, 10974860), (65, 9961796), (68, 9522305), (85, 7617844), (118, 5487430), (130, 4980898), (169, 3831460), (170, 3808922), (191, 3390140), (221, 2929940), (236, 2743715), (260, 2490449), (295, 2194972), (338, 1915730), (340, 1904461), (382, 1695070), (442, 1464970), (590, 1097486), (676, 957865), (764, 847535), (767, 844220), (845, 766292), (884, 732485), (955, 678028), (1003, 645580), (1105, 585988), (1180, 548743), (1534, 422110), (1690, 383146), (1910, 339014), (2006, 322790), (2210, 292994), (2483, 260780), (2873, 225380), (3068, 211055), (3247, 199420), (3380, 191573), (3820, 169507), (3835, 168844), (4012, 161395), (4420, 146497), (4966, 130390), (5015, 129116), (5746, 112690), (6494, 99710), (7670, 84422), (9932, 65195), (9971, 64940), (10030, 64558), (11269, 57460), (11492, 56345), (12415, 52156), (12988, 49855), (13039, 49660), (14365, 45076), (15340, 42211), (16235, 39884), (19942, 32470), (20060, 32279), (22538, 28730), (24830, 26078)]