978011900

素因数分解:

$2^2\times 5^2\times {\mathrm{151}}^1\times {\mathrm{239}}^1\times {\mathrm{271}}^1$

素因数の和:675

約数の個数: 72

約数和(自身を含む): 2153195520

約数和(自身を除く): 1175183620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 151, 239, 271, 302, 478, 542, 604, 755, 956, 1084, 1195, 1355, 1510, 2390, 2710, 3020, 3775, 4780, 5420, 5975, 6775, 7550, 11950, 13550, 15100, 23900, 27100, 36089, 40921, 64769, 72178, 81842, 129538, 144356, 163684, 180445, 204605, 259076, 323845, 360890, 409210, 647690, 721780, 818420, 902225, 1023025, 1295380, 1619225, 1804450, 2046050, 3238450, 3608900, 4092100, 6476900, 9780119, 19560238, 39120476, 48900595, 97801190, 195602380, 244502975, 489005950, 978011900]

約数ペア:

[(1, 978011900), (2, 489005950), (4, 244502975), (5, 195602380), (10, 97801190), (20, 48900595), (25, 39120476), (50, 19560238), (100, 9780119), (151, 6476900), (239, 4092100), (271, 3608900), (302, 3238450), (478, 2046050), (542, 1804450), (604, 1619225), (755, 1295380), (956, 1023025), (1084, 902225), (1195, 818420), (1355, 721780), (1510, 647690), (2390, 409210), (2710, 360890), (3020, 323845), (3775, 259076), (4780, 204605), (5420, 180445), (5975, 163684), (6775, 144356), (7550, 129538), (11950, 81842), (13550, 72178), (15100, 64769), (23900, 40921), (27100, 36089)]