21761220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1213}}^1$

素因数の和:1261

約数の個数: 96

約数和(自身を含む): 68527872

約数和(自身を除く): 46766652

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 23, 26, 30, 39, 46, 52, 60, 65, 69, 78, 92, 115, 130, 138, 156, 195, 230, 260, 276, 299, 345, 390, 460, 598, 690, 780, 897, 1196, 1213, 1380, 1495, 1794, 2426, 2990, 3588, 3639, 4485, 4852, 5980, 6065, 7278, 8970, 12130, 14556, 15769, 17940, 18195, 24260, 27899, 31538, 36390, 47307, 55798, 63076, 72780, 78845, 83697, 94614, 111596, 139495, 157690, 167394, 189228, 236535, 278990, 315380, 334788, 362687, 418485, 473070, 557980, 725374, 836970, 946140, 1088061, 1450748, 1673940, 1813435, 2176122, 3626870, 4352244, 5440305, 7253740, 10880610, 21761220]

約数ペア:

[(1, 21761220), (2, 10880610), (3, 7253740), (4, 5440305), (5, 4352244), (6, 3626870), (10, 2176122), (12, 1813435), (13, 1673940), (15, 1450748), (20, 1088061), (23, 946140), (26, 836970), (30, 725374), (39, 557980), (46, 473070), (52, 418485), (60, 362687), (65, 334788), (69, 315380), (78, 278990), (92, 236535), (115, 189228), (130, 167394), (138, 157690), (156, 139495), (195, 111596), (230, 94614), (260, 83697), (276, 78845), (299, 72780), (345, 63076), (390, 55798), (460, 47307), (598, 36390), (690, 31538), (780, 27899), (897, 24260), (1196, 18195), (1213, 17940), (1380, 15769), (1495, 14556), (1794, 12130), (2426, 8970), (2990, 7278), (3588, 6065), (3639, 5980), (4485, 4852)]