20921963907

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{167}}^1\times {\mathrm{2267}}^1$

素因数の和:2572

約数の個数: 48

約数和(自身を含む): 30680052480

約数和(自身を除く): 9758088573

約数列:

[1, 3, 13, 39, 109, 167, 169, 327, 501, 507, 1417, 2171, 2267, 4251, 6513, 6801, 18203, 18421, 28223, 29471, 54609, 55263, 84669, 88413, 236639, 247103, 378589, 383123, 709917, 741309, 1135767, 1149369, 3076307, 3212339, 4921657, 9228921, 9637017, 14764971, 41266201, 41760407, 63981541, 123798603, 125281221, 191944623, 536460613, 1609381839, 6973987969, 20921963907]

約数ペア:

[(1, 20921963907), (3, 6973987969), (13, 1609381839), (39, 536460613), (109, 191944623), (167, 125281221), (169, 123798603), (327, 63981541), (501, 41760407), (507, 41266201), (1417, 14764971), (2171, 9637017), (2267, 9228921), (4251, 4921657), (6513, 3212339), (6801, 3076307), (18203, 1149369), (18421, 1135767), (28223, 741309), (29471, 709917), (54609, 383123), (55263, 378589), (84669, 247103), (88413, 236639)]