21815820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9323}}^1$

素因数の和:9351

約数の個数: 72

約数和(自身を含む): 71272656

約数和(自身を除く): 49456836

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 9323, 18646, 27969, 37292, 46615, 55938, 83907, 93230, 111876, 121199, 139845, 167814, 186460, 242398, 279690, 335628, 363597, 419535, 484796, 559380, 605995, 727194, 839070, 1090791, 1211990, 1454388, 1678140, 1817985, 2181582, 2423980, 3635970, 4363164, 5453955, 7271940, 10907910, 21815820]

約数ペア:

[(1, 21815820), (2, 10907910), (3, 7271940), (4, 5453955), (5, 4363164), (6, 3635970), (9, 2423980), (10, 2181582), (12, 1817985), (13, 1678140), (15, 1454388), (18, 1211990), (20, 1090791), (26, 839070), (30, 727194), (36, 605995), (39, 559380), (45, 484796), (52, 419535), (60, 363597), (65, 335628), (78, 279690), (90, 242398), (117, 186460), (130, 167814), (156, 139845), (180, 121199), (195, 111876), (234, 93230), (260, 83907), (390, 55938), (468, 46615), (585, 37292), (780, 27969), (1170, 18646), (2340, 9323)]