397070900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{269}}^1\times {\mathrm{509}}^1$

素因数の和:821

約数の個数: 72

約数和(自身を含む): 896427000

約数和(自身を除く): 499356100

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 269, 290, 509, 538, 580, 725, 1018, 1076, 1345, 1450, 2036, 2545, 2690, 2900, 5090, 5380, 6725, 7801, 10180, 12725, 13450, 14761, 15602, 25450, 26900, 29522, 31204, 39005, 50900, 59044, 73805, 78010, 136921, 147610, 156020, 195025, 273842, 295220, 369025, 390050, 547684, 684605, 738050, 780100, 1369210, 1476100, 2738420, 3423025, 3970709, 6846050, 7941418, 13692100, 15882836, 19853545, 39707090, 79414180, 99267725, 198535450, 397070900]

約数ペア:

[(1, 397070900), (2, 198535450), (4, 99267725), (5, 79414180), (10, 39707090), (20, 19853545), (25, 15882836), (29, 13692100), (50, 7941418), (58, 6846050), (100, 3970709), (116, 3423025), (145, 2738420), (269, 1476100), (290, 1369210), (509, 780100), (538, 738050), (580, 684605), (725, 547684), (1018, 390050), (1076, 369025), (1345, 295220), (1450, 273842), (2036, 195025), (2545, 156020), (2690, 147610), (2900, 136921), (5090, 78010), (5380, 73805), (6725, 59044), (7801, 50900), (10180, 39005), (12725, 31204), (13450, 29522), (14761, 26900), (15602, 25450)]