20111500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:140

約数の個数: 96

約数和(自身を含む): 48484800

約数和(自身を除く): 28373300

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 29, 38, 50, 58, 73, 76, 95, 100, 116, 125, 145, 146, 190, 250, 290, 292, 365, 380, 475, 500, 551, 580, 725, 730, 950, 1102, 1387, 1450, 1460, 1825, 1900, 2117, 2204, 2375, 2755, 2774, 2900, 3625, 3650, 4234, 4750, 5510, 5548, 6935, 7250, 7300, 8468, 9125, 9500, 10585, 11020, 13775, 13870, 14500, 18250, 21170, 27550, 27740, 34675, 36500, 40223, 42340, 52925, 55100, 68875, 69350, 80446, 105850, 137750, 138700, 160892, 173375, 201115, 211700, 264625, 275500, 346750, 402230, 529250, 693500, 804460, 1005575, 1058500, 2011150, 4022300, 5027875, 10055750, 20111500]

約数ペア:

[(1, 20111500), (2, 10055750), (4, 5027875), (5, 4022300), (10, 2011150), (19, 1058500), (20, 1005575), (25, 804460), (29, 693500), (38, 529250), (50, 402230), (58, 346750), (73, 275500), (76, 264625), (95, 211700), (100, 201115), (116, 173375), (125, 160892), (145, 138700), (146, 137750), (190, 105850), (250, 80446), (290, 69350), (292, 68875), (365, 55100), (380, 52925), (475, 42340), (500, 40223), (551, 36500), (580, 34675), (725, 27740), (730, 27550), (950, 21170), (1102, 18250), (1387, 14500), (1450, 13870), (1460, 13775), (1825, 11020), (1900, 10585), (2117, 9500), (2204, 9125), (2375, 8468), (2755, 7300), (2774, 7250), (2900, 6935), (3625, 5548), (3650, 5510), (4234, 4750)]