64840000

素因数分解:

$2^6\times 5^4\times {\mathrm{1621}}^1$

素因数の和:1653

約数の個数: 70

約数和(自身を含む): 160881314

約数和(自身を除く): 96041314

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 625, 800, 1000, 1250, 1600, 1621, 2000, 2500, 3242, 4000, 5000, 6484, 8000, 8105, 10000, 12968, 16210, 20000, 25936, 32420, 40000, 40525, 51872, 64840, 81050, 103744, 129680, 162100, 202625, 259360, 324200, 405250, 518720, 648400, 810500, 1013125, 1296800, 1621000, 2026250, 2593600, 3242000, 4052500, 6484000, 8105000, 12968000, 16210000, 32420000, 64840000]

約数ペア:

[(1, 64840000), (2, 32420000), (4, 16210000), (5, 12968000), (8, 8105000), (10, 6484000), (16, 4052500), (20, 3242000), (25, 2593600), (32, 2026250), (40, 1621000), (50, 1296800), (64, 1013125), (80, 810500), (100, 648400), (125, 518720), (160, 405250), (200, 324200), (250, 259360), (320, 202625), (400, 162100), (500, 129680), (625, 103744), (800, 81050), (1000, 64840), (1250, 51872), (1600, 40525), (1621, 40000), (2000, 32420), (2500, 25936), (3242, 20000), (4000, 16210), (5000, 12968), (6484, 10000), (8000, 8105)]