21584804540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{677}}^1\times {\mathrm{823}}^1$

素因数の和:1671

約数の個数: 96

約数和(自身を含む): 49274870400

約数和(自身を除く): 27690065860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 149, 260, 298, 596, 677, 745, 823, 1354, 1490, 1646, 1937, 2708, 2980, 3292, 3385, 3874, 4115, 6770, 7748, 8230, 8801, 9685, 10699, 13540, 16460, 17602, 19370, 21398, 35204, 38740, 42796, 44005, 53495, 88010, 100873, 106990, 122627, 176020, 201746, 213980, 245254, 403492, 490508, 504365, 557171, 613135, 1008730, 1114342, 1226270, 1311349, 1594151, 2017460, 2228684, 2452540, 2622698, 2785855, 3188302, 5245396, 5571710, 6376604, 6556745, 7243223, 7970755, 11143420, 13113490, 14486446, 15941510, 26226980, 28972892, 31883020, 36216115, 72432230, 83018479, 144864460, 166036958, 332073916, 415092395, 830184790, 1079240227, 1660369580, 2158480454, 4316960908, 5396201135, 10792402270, 21584804540]

約数ペア:

[(1, 21584804540), (2, 10792402270), (4, 5396201135), (5, 4316960908), (10, 2158480454), (13, 1660369580), (20, 1079240227), (26, 830184790), (52, 415092395), (65, 332073916), (130, 166036958), (149, 144864460), (260, 83018479), (298, 72432230), (596, 36216115), (677, 31883020), (745, 28972892), (823, 26226980), (1354, 15941510), (1490, 14486446), (1646, 13113490), (1937, 11143420), (2708, 7970755), (2980, 7243223), (3292, 6556745), (3385, 6376604), (3874, 5571710), (4115, 5245396), (6770, 3188302), (7748, 2785855), (8230, 2622698), (8801, 2452540), (9685, 2228684), (10699, 2017460), (13540, 1594151), (16460, 1311349), (17602, 1226270), (19370, 1114342), (21398, 1008730), (35204, 613135), (38740, 557171), (42796, 504365), (44005, 490508), (53495, 403492), (88010, 245254), (100873, 213980), (106990, 201746), (122627, 176020)]