21056550057

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{241}}^1\times {\mathrm{557}}^1\times {\mathrm{601}}^1$

素因数の和:1434

約数の個数: 48

約数和(自身を含む): 31703752080

約数和(自身を除く): 10647202023

約数列:

[1, 3, 9, 29, 87, 241, 261, 557, 601, 723, 1671, 1803, 2169, 5013, 5409, 6989, 16153, 17429, 20967, 48459, 52287, 62901, 134237, 144841, 145377, 156861, 334757, 402711, 434523, 1004271, 1208133, 1303569, 3012813, 3892873, 4200389, 9707953, 11678619, 12601167, 29123859, 35035857, 37803501, 80676437, 87371577, 242029311, 726087933, 2339616673, 7018850019, 21056550057]

約数ペア:

[(1, 21056550057), (3, 7018850019), (9, 2339616673), (29, 726087933), (87, 242029311), (241, 87371577), (261, 80676437), (557, 37803501), (601, 35035857), (723, 29123859), (1671, 12601167), (1803, 11678619), (2169, 9707953), (5013, 4200389), (5409, 3892873), (6989, 3012813), (16153, 1303569), (17429, 1208133), (20967, 1004271), (48459, 434523), (52287, 402711), (62901, 334757), (134237, 156861), (144841, 145377)]