21778380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:296

約数の個数: 144

約数和(自身を含む): 73198944

約数和(自身を除く): 51420564

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 41, 45, 52, 60, 65, 78, 82, 90, 117, 123, 130, 156, 164, 180, 195, 205, 227, 234, 246, 260, 369, 390, 410, 454, 468, 492, 533, 585, 615, 681, 738, 780, 820, 908, 1066, 1135, 1170, 1230, 1362, 1476, 1599, 1845, 2043, 2132, 2270, 2340, 2460, 2665, 2724, 2951, 3198, 3405, 3690, 4086, 4540, 4797, 5330, 5902, 6396, 6810, 7380, 7995, 8172, 8853, 9307, 9594, 10215, 10660, 11804, 13620, 14755, 15990, 17706, 18614, 19188, 20430, 23985, 26559, 27921, 29510, 31980, 35412, 37228, 40860, 44265, 46535, 47970, 53118, 55842, 59020, 83763, 88530, 93070, 95940, 106236, 111684, 120991, 132795, 139605, 167526, 177060, 186140, 241982, 265590, 279210, 335052, 362973, 418815, 483964, 531180, 558420, 604955, 725946, 837630, 1088919, 1209910, 1451892, 1675260, 1814865, 2177838, 2419820, 3629730, 4355676, 5444595, 7259460, 10889190, 21778380]

約数ペア:

[(1, 21778380), (2, 10889190), (3, 7259460), (4, 5444595), (5, 4355676), (6, 3629730), (9, 2419820), (10, 2177838), (12, 1814865), (13, 1675260), (15, 1451892), (18, 1209910), (20, 1088919), (26, 837630), (30, 725946), (36, 604955), (39, 558420), (41, 531180), (45, 483964), (52, 418815), (60, 362973), (65, 335052), (78, 279210), (82, 265590), (90, 241982), (117, 186140), (123, 177060), (130, 167526), (156, 139605), (164, 132795), (180, 120991), (195, 111684), (205, 106236), (227, 95940), (234, 93070), (246, 88530), (260, 83763), (369, 59020), (390, 55842), (410, 53118), (454, 47970), (468, 46535), (492, 44265), (533, 40860), (585, 37228), (615, 35412), (681, 31980), (738, 29510), (780, 27921), (820, 26559), (908, 23985), (1066, 20430), (1135, 19188), (1170, 18614), (1230, 17706), (1362, 15990), (1476, 14755), (1599, 13620), (1845, 11804), (2043, 10660), (2132, 10215), (2270, 9594), (2340, 9307), (2460, 8853), (2665, 8172), (2724, 7995), (2951, 7380), (3198, 6810), (3405, 6396), (3690, 5902), (4086, 5330), (4540, 4797)]