406948750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:431

約数の個数: 80

約数和(自身を含む): 834482880

約数和(自身を除く): 427534130

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 79, 125, 130, 158, 250, 317, 325, 395, 625, 634, 650, 790, 1027, 1250, 1585, 1625, 1975, 2054, 3170, 3250, 3950, 4121, 5135, 7925, 8125, 8242, 9875, 10270, 15850, 16250, 19750, 20605, 25043, 25675, 39625, 41210, 49375, 50086, 51350, 79250, 98750, 103025, 125215, 128375, 198125, 206050, 250430, 256750, 325559, 396250, 515125, 626075, 641875, 651118, 1030250, 1252150, 1283750, 1627795, 2575625, 3130375, 3255590, 5151250, 6260750, 8138975, 15651875, 16277950, 31303750, 40694875, 81389750, 203474375, 406948750]

約数ペア:

[(1, 406948750), (2, 203474375), (5, 81389750), (10, 40694875), (13, 31303750), (25, 16277950), (26, 15651875), (50, 8138975), (65, 6260750), (79, 5151250), (125, 3255590), (130, 3130375), (158, 2575625), (250, 1627795), (317, 1283750), (325, 1252150), (395, 1030250), (625, 651118), (634, 641875), (650, 626075), (790, 515125), (1027, 396250), (1250, 325559), (1585, 256750), (1625, 250430), (1975, 206050), (2054, 198125), (3170, 128375), (3250, 125215), (3950, 103025), (4121, 98750), (5135, 79250), (7925, 51350), (8125, 50086), (8242, 49375), (9875, 41210), (10270, 39625), (15850, 25675), (16250, 25043), (19750, 20605)]