20218572880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{271}}^1\times {\mathrm{569}}^1$

素因数の和:1013

約数の個数: 160

約数和(自身を含む): 51907392000

約数和(自身を除く): 31688819120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 149, 176, 220, 271, 298, 440, 542, 569, 596, 745, 880, 1084, 1138, 1192, 1355, 1490, 1639, 2168, 2276, 2384, 2710, 2845, 2980, 2981, 3278, 4336, 4552, 5420, 5690, 5960, 5962, 6259, 6556, 8195, 9104, 10840, 11380, 11920, 11924, 12518, 13112, 14905, 16390, 21680, 22760, 23848, 25036, 26224, 29810, 31295, 32780, 40379, 45520, 47696, 50072, 59620, 62590, 65560, 80758, 84781, 100144, 119240, 125180, 131120, 154199, 161516, 169562, 201895, 238480, 250360, 308398, 323032, 339124, 403790, 423905, 444169, 500720, 616796, 646064, 678248, 770995, 807580, 847810, 888338, 932591, 1233592, 1356496, 1541990, 1615160, 1695620, 1696189, 1776676, 1865182, 2220845, 2467184, 3083980, 3230320, 3391240, 3392378, 3553352, 3730364, 4441690, 4662955, 6167960, 6782480, 6784756, 7106704, 7460728, 8480945, 8883380, 9325910, 12335920, 13569512, 14921456, 16961890, 17766760, 18651820, 22975651, 27139024, 33923780, 35533520, 37303640, 45951302, 67847560, 74607280, 91902604, 114878255, 135695120, 183805208, 229756510, 252732161, 367610416, 459513020, 505464322, 919026040, 1010928644, 1263660805, 1838052080, 2021857288, 2527321610, 4043714576, 5054643220, 10109286440, 20218572880]

約数ペア:

[(1, 20218572880), (2, 10109286440), (4, 5054643220), (5, 4043714576), (8, 2527321610), (10, 2021857288), (11, 1838052080), (16, 1263660805), (20, 1010928644), (22, 919026040), (40, 505464322), (44, 459513020), (55, 367610416), (80, 252732161), (88, 229756510), (110, 183805208), (149, 135695120), (176, 114878255), (220, 91902604), (271, 74607280), (298, 67847560), (440, 45951302), (542, 37303640), (569, 35533520), (596, 33923780), (745, 27139024), (880, 22975651), (1084, 18651820), (1138, 17766760), (1192, 16961890), (1355, 14921456), (1490, 13569512), (1639, 12335920), (2168, 9325910), (2276, 8883380), (2384, 8480945), (2710, 7460728), (2845, 7106704), (2980, 6784756), (2981, 6782480), (3278, 6167960), (4336, 4662955), (4552, 4441690), (5420, 3730364), (5690, 3553352), (5960, 3392378), (5962, 3391240), (6259, 3230320), (6556, 3083980), (8195, 2467184), (9104, 2220845), (10840, 1865182), (11380, 1776676), (11920, 1696189), (11924, 1695620), (12518, 1615160), (13112, 1541990), (14905, 1356496), (16390, 1233592), (21680, 932591), (22760, 888338), (23848, 847810), (25036, 807580), (26224, 770995), (29810, 678248), (31295, 646064), (32780, 616796), (40379, 500720), (45520, 444169), (47696, 423905), (50072, 403790), (59620, 339124), (62590, 323032), (65560, 308398), (80758, 250360), (84781, 238480), (100144, 201895), (119240, 169562), (125180, 161516), (131120, 154199)]