261813720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{311683}}^1$

素因数の和:311704

約数の個数: 64

約数和(自身を含む): 897649920

約数和(自身を除く): 635836200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 311683, 623366, 935049, 1246732, 1558415, 1870098, 2181781, 2493464, 3116830, 3740196, 4363562, 4675245, 6233660, 6545343, 7480392, 8727124, 9350490, 10908905, 12467320, 13090686, 17454248, 18700980, 21817810, 26181372, 32726715, 37401960, 43635620, 52362744, 65453430, 87271240, 130906860, 261813720]

約数ペア:

[(1, 261813720), (2, 130906860), (3, 87271240), (4, 65453430), (5, 52362744), (6, 43635620), (7, 37401960), (8, 32726715), (10, 26181372), (12, 21817810), (14, 18700980), (15, 17454248), (20, 13090686), (21, 12467320), (24, 10908905), (28, 9350490), (30, 8727124), (35, 7480392), (40, 6545343), (42, 6233660), (56, 4675245), (60, 4363562), (70, 3740196), (84, 3116830), (105, 2493464), (120, 2181781), (140, 1870098), (168, 1558415), (210, 1246732), (280, 935049), (420, 623366), (840, 311683)]