21085260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{823}}^1$

素因数の和:903

約数の個数: 96

約数和(自身を含む): 68662272

約数和(自身を除く): 47577012

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 61, 70, 84, 105, 122, 140, 183, 210, 244, 305, 366, 420, 427, 610, 732, 823, 854, 915, 1220, 1281, 1646, 1708, 1830, 2135, 2469, 2562, 3292, 3660, 4115, 4270, 4938, 5124, 5761, 6405, 8230, 8540, 9876, 11522, 12345, 12810, 16460, 17283, 23044, 24690, 25620, 28805, 34566, 49380, 50203, 57610, 69132, 86415, 100406, 115220, 150609, 172830, 200812, 251015, 301218, 345660, 351421, 502030, 602436, 702842, 753045, 1004060, 1054263, 1405684, 1506090, 1757105, 2108526, 3012180, 3514210, 4217052, 5271315, 7028420, 10542630, 21085260]

約数ペア:

[(1, 21085260), (2, 10542630), (3, 7028420), (4, 5271315), (5, 4217052), (6, 3514210), (7, 3012180), (10, 2108526), (12, 1757105), (14, 1506090), (15, 1405684), (20, 1054263), (21, 1004060), (28, 753045), (30, 702842), (35, 602436), (42, 502030), (60, 351421), (61, 345660), (70, 301218), (84, 251015), (105, 200812), (122, 172830), (140, 150609), (183, 115220), (210, 100406), (244, 86415), (305, 69132), (366, 57610), (420, 50203), (427, 49380), (610, 34566), (732, 28805), (823, 25620), (854, 24690), (915, 23044), (1220, 17283), (1281, 16460), (1646, 12810), (1708, 12345), (1830, 11522), (2135, 9876), (2469, 8540), (2562, 8230), (3292, 6405), (3660, 5761), (4115, 5124), (4270, 4938)]