21865620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{659}}^1$

素因数の和:757

約数の個数: 96

約数和(自身を含む): 70963200

約数和(自身を除く): 49097580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 79, 84, 105, 140, 158, 210, 237, 316, 395, 420, 474, 553, 659, 790, 948, 1106, 1185, 1318, 1580, 1659, 1977, 2212, 2370, 2636, 2765, 3295, 3318, 3954, 4613, 4740, 5530, 6590, 6636, 7908, 8295, 9226, 9885, 11060, 13180, 13839, 16590, 18452, 19770, 23065, 27678, 33180, 39540, 46130, 52061, 55356, 69195, 92260, 104122, 138390, 156183, 208244, 260305, 276780, 312366, 364427, 520610, 624732, 728854, 780915, 1041220, 1093281, 1457708, 1561830, 1822135, 2186562, 3123660, 3644270, 4373124, 5466405, 7288540, 10932810, 21865620]

約数ペア:

[(1, 21865620), (2, 10932810), (3, 7288540), (4, 5466405), (5, 4373124), (6, 3644270), (7, 3123660), (10, 2186562), (12, 1822135), (14, 1561830), (15, 1457708), (20, 1093281), (21, 1041220), (28, 780915), (30, 728854), (35, 624732), (42, 520610), (60, 364427), (70, 312366), (79, 276780), (84, 260305), (105, 208244), (140, 156183), (158, 138390), (210, 104122), (237, 92260), (316, 69195), (395, 55356), (420, 52061), (474, 46130), (553, 39540), (659, 33180), (790, 27678), (948, 23065), (1106, 19770), (1185, 18452), (1318, 16590), (1580, 13839), (1659, 13180), (1977, 11060), (2212, 9885), (2370, 9226), (2636, 8295), (2765, 7908), (3295, 6636), (3318, 6590), (3954, 5530), (4613, 4740)]