21866520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:265

約数の個数: 128

約数和(自身を含む): 71850240

約数和(自身を除く): 49983720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 107, 120, 130, 131, 156, 195, 214, 260, 262, 312, 321, 390, 393, 428, 520, 524, 535, 642, 655, 780, 786, 856, 1048, 1070, 1284, 1310, 1391, 1560, 1572, 1605, 1703, 1965, 2140, 2568, 2620, 2782, 3144, 3210, 3406, 3930, 4173, 4280, 5109, 5240, 5564, 6420, 6812, 6955, 7860, 8346, 8515, 10218, 11128, 12840, 13624, 13910, 14017, 15720, 16692, 17030, 20436, 20865, 25545, 27820, 28034, 33384, 34060, 40872, 41730, 42051, 51090, 55640, 56068, 68120, 70085, 83460, 84102, 102180, 112136, 140170, 166920, 168204, 182221, 204360, 210255, 280340, 336408, 364442, 420510, 546663, 560680, 728884, 841020, 911105, 1093326, 1457768, 1682040, 1822210, 2186652, 2733315, 3644420, 4373304, 5466630, 7288840, 10933260, 21866520]

約数ペア:

[(1, 21866520), (2, 10933260), (3, 7288840), (4, 5466630), (5, 4373304), (6, 3644420), (8, 2733315), (10, 2186652), (12, 1822210), (13, 1682040), (15, 1457768), (20, 1093326), (24, 911105), (26, 841020), (30, 728884), (39, 560680), (40, 546663), (52, 420510), (60, 364442), (65, 336408), (78, 280340), (104, 210255), (107, 204360), (120, 182221), (130, 168204), (131, 166920), (156, 140170), (195, 112136), (214, 102180), (260, 84102), (262, 83460), (312, 70085), (321, 68120), (390, 56068), (393, 55640), (428, 51090), (520, 42051), (524, 41730), (535, 40872), (642, 34060), (655, 33384), (780, 28034), (786, 27820), (856, 25545), (1048, 20865), (1070, 20436), (1284, 17030), (1310, 16692), (1391, 15720), (1560, 14017), (1572, 13910), (1605, 13624), (1703, 12840), (1965, 11128), (2140, 10218), (2568, 8515), (2620, 8346), (2782, 7860), (3144, 6955), (3210, 6812), (3406, 6420), (3930, 5564), (4173, 5240), (4280, 5109)]