78817510

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 155520000

約数和(自身を除く): 76702490

約数列:

[1, 2, 5, 10, 19, 38, 59, 79, 89, 95, 118, 158, 178, 190, 295, 395, 445, 590, 790, 890, 1121, 1501, 1691, 2242, 3002, 3382, 4661, 5251, 5605, 7031, 7505, 8455, 9322, 10502, 11210, 14062, 15010, 16910, 23305, 26255, 35155, 46610, 52510, 70310, 88559, 99769, 133589, 177118, 199538, 267178, 414829, 442795, 498845, 667945, 829658, 885590, 997690, 1335890, 2074145, 4148290, 7881751, 15763502, 39408755, 78817510]

約数ペア:

[(1, 78817510), (2, 39408755), (5, 15763502), (10, 7881751), (19, 4148290), (38, 2074145), (59, 1335890), (79, 997690), (89, 885590), (95, 829658), (118, 667945), (158, 498845), (178, 442795), (190, 414829), (295, 267178), (395, 199538), (445, 177118), (590, 133589), (790, 99769), (890, 88559), (1121, 70310), (1501, 52510), (1691, 46610), (2242, 35155), (3002, 26255), (3382, 23305), (4661, 16910), (5251, 15010), (5605, 14062), (7031, 11210), (7505, 10502), (8455, 9322)]