21105864400

素因数分解:

$2^4\times 5^2\times {\mathrm{2447}}^1\times {\mathrm{21563}}^1$

素因数の和:24028

約数の個数: 60

約数和(自身を含む): 50729913792

約数和(自身を除く): 29624049392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 2447, 4894, 9788, 12235, 19576, 21563, 24470, 39152, 43126, 48940, 61175, 86252, 97880, 107815, 122350, 172504, 195760, 215630, 244700, 345008, 431260, 489400, 539075, 862520, 978800, 1078150, 1725040, 2156300, 4312600, 8625200, 52764661, 105529322, 211058644, 263823305, 422117288, 527646610, 844234576, 1055293220, 1319116525, 2110586440, 2638233050, 4221172880, 5276466100, 10552932200, 21105864400]

約数ペア:

[(1, 21105864400), (2, 10552932200), (4, 5276466100), (5, 4221172880), (8, 2638233050), (10, 2110586440), (16, 1319116525), (20, 1055293220), (25, 844234576), (40, 527646610), (50, 422117288), (80, 263823305), (100, 211058644), (200, 105529322), (400, 52764661), (2447, 8625200), (4894, 4312600), (9788, 2156300), (12235, 1725040), (19576, 1078150), (21563, 978800), (24470, 862520), (39152, 539075), (43126, 489400), (48940, 431260), (61175, 345008), (86252, 244700), (97880, 215630), (107815, 195760), (122350, 172504)]