21756166640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{509}}^1\times {\mathrm{563}}^1$

素因数の和:1171

約数の個数: 160

約数和(自身を含む): 55427077440

約数和(自身を除く): 33670910800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 73, 80, 104, 130, 146, 208, 260, 292, 365, 509, 520, 563, 584, 730, 949, 1018, 1040, 1126, 1168, 1460, 1898, 2036, 2252, 2545, 2815, 2920, 3796, 4072, 4504, 4745, 5090, 5630, 5840, 6617, 7319, 7592, 8144, 9008, 9490, 10180, 11260, 13234, 14638, 15184, 18980, 20360, 22520, 26468, 29276, 33085, 36595, 37157, 37960, 40720, 41099, 45040, 52936, 58552, 66170, 73190, 74314, 75920, 82198, 105872, 117104, 132340, 146380, 148628, 164396, 185785, 205495, 264680, 286567, 292760, 297256, 328792, 371570, 410990, 483041, 529360, 534287, 573134, 585520, 594512, 657584, 743140, 821980, 966082, 1068574, 1146268, 1432835, 1486280, 1643960, 1932164, 2137148, 2292536, 2415205, 2671435, 2865670, 2972560, 3287920, 3725371, 3864328, 4274296, 4585072, 4830410, 5342870, 5731340, 7450742, 7728656, 8548592, 9660820, 10685740, 11462680, 14901484, 18626855, 19321640, 20919391, 21371480, 22925360, 29802968, 37253710, 38643280, 41838782, 42742960, 59605936, 74507420, 83677564, 104596955, 149014840, 167355128, 209193910, 271952083, 298029680, 334710256, 418387820, 543904166, 836775640, 1087808332, 1359760415, 1673551280, 2175616664, 2719520830, 4351233328, 5439041660, 10878083320, 21756166640]

約数ペア:

[(1, 21756166640), (2, 10878083320), (4, 5439041660), (5, 4351233328), (8, 2719520830), (10, 2175616664), (13, 1673551280), (16, 1359760415), (20, 1087808332), (26, 836775640), (40, 543904166), (52, 418387820), (65, 334710256), (73, 298029680), (80, 271952083), (104, 209193910), (130, 167355128), (146, 149014840), (208, 104596955), (260, 83677564), (292, 74507420), (365, 59605936), (509, 42742960), (520, 41838782), (563, 38643280), (584, 37253710), (730, 29802968), (949, 22925360), (1018, 21371480), (1040, 20919391), (1126, 19321640), (1168, 18626855), (1460, 14901484), (1898, 11462680), (2036, 10685740), (2252, 9660820), (2545, 8548592), (2815, 7728656), (2920, 7450742), (3796, 5731340), (4072, 5342870), (4504, 4830410), (4745, 4585072), (5090, 4274296), (5630, 3864328), (5840, 3725371), (6617, 3287920), (7319, 2972560), (7592, 2865670), (8144, 2671435), (9008, 2415205), (9490, 2292536), (10180, 2137148), (11260, 1932164), (13234, 1643960), (14638, 1486280), (15184, 1432835), (18980, 1146268), (20360, 1068574), (22520, 966082), (26468, 821980), (29276, 743140), (33085, 657584), (36595, 594512), (37157, 585520), (37960, 573134), (40720, 534287), (41099, 529360), (45040, 483041), (52936, 410990), (58552, 371570), (66170, 328792), (73190, 297256), (74314, 292760), (75920, 286567), (82198, 264680), (105872, 205495), (117104, 185785), (132340, 164396), (146380, 148628)]