21034020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{821}}^1$

素因数の和:901

約数の個数: 96

約数和(自身を含む): 68495616

約数和(自身を除く): 47461596

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, 821, 854, 915, 1220, 1281, 1642, 1708, 1830, 2135, 2463, 2562, 3284, 3660, 4105, 4270, 4926, 5124, 5747, 6405, 8210, 8540, 9852, 11494, 12315, 12810, 16420, 17241, 22988, 24630, 25620, 28735, 34482, 49260, 50081, 57470, 68964, 86205, 100162, 114940, 150243, 172410, 200324, 250405, 300486, 344820, 350567, 500810, 600972, 701134, 751215, 1001620, 1051701, 1402268, 1502430, 1752835, 2103402, 3004860, 3505670, 4206804, 5258505, 7011340, 10517010, 21034020]

約数ペア:

[(1, 21034020), (2, 10517010), (3, 7011340), (4, 5258505), (5, 4206804), (6, 3505670), (7, 3004860), (10, 2103402), (12, 1752835), (14, 1502430), (15, 1402268), (20, 1051701), (21, 1001620), (28, 751215), (30, 701134), (35, 600972), (42, 500810), (60, 350567), (61, 344820), (70, 300486), (84, 250405), (105, 200324), (122, 172410), (140, 150243), (183, 114940), (210, 100162), (244, 86205), (305, 68964), (366, 57470), (420, 50081), (427, 49260), (610, 34482), (732, 28735), (821, 25620), (854, 24630), (915, 22988), (1220, 17241), (1281, 16420), (1642, 12810), (1708, 12315), (1830, 11494), (2135, 9852), (2463, 8540), (2562, 8210), (3284, 6405), (3660, 5747), (4105, 5124), (4270, 4926)]