21204390280

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{509}}^1\times {\mathrm{22159}}^1$

素因数の和:22726

約数の個数: 64

約数和(自身を含む): 48822912000

約数和(自身を除く): 27618521720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 509, 940, 1018, 1880, 2036, 2545, 4072, 5090, 10180, 20360, 22159, 23923, 44318, 47846, 88636, 95692, 110795, 119615, 177272, 191384, 221590, 239230, 443180, 478460, 886360, 956920, 1041473, 2082946, 4165892, 5207365, 8331784, 10414730, 11278931, 20829460, 22557862, 41658920, 45115724, 56394655, 90231448, 112789310, 225578620, 451157240, 530109757, 1060219514, 2120439028, 2650548785, 4240878056, 5301097570, 10602195140, 21204390280]

約数ペア:

[(1, 21204390280), (2, 10602195140), (4, 5301097570), (5, 4240878056), (8, 2650548785), (10, 2120439028), (20, 1060219514), (40, 530109757), (47, 451157240), (94, 225578620), (188, 112789310), (235, 90231448), (376, 56394655), (470, 45115724), (509, 41658920), (940, 22557862), (1018, 20829460), (1880, 11278931), (2036, 10414730), (2545, 8331784), (4072, 5207365), (5090, 4165892), (10180, 2082946), (20360, 1041473), (22159, 956920), (23923, 886360), (44318, 478460), (47846, 443180), (88636, 239230), (95692, 221590), (110795, 191384), (119615, 177272)]