20217444

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{359}}^1$

素因数の和:417

約数の個数: 72

約数和(自身を含む): 53766720

約数和(自身を除く): 33549276

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 38, 39, 52, 57, 76, 78, 114, 156, 228, 247, 359, 361, 494, 718, 722, 741, 988, 1077, 1083, 1436, 1444, 1482, 2154, 2166, 2964, 4308, 4332, 4667, 4693, 6821, 9334, 9386, 13642, 14001, 14079, 18668, 18772, 20463, 27284, 28002, 28158, 40926, 56004, 56316, 81852, 88673, 129599, 177346, 259198, 266019, 354692, 388797, 518396, 532038, 777594, 1064076, 1555188, 1684787, 3369574, 5054361, 6739148, 10108722, 20217444]

約数ペア:

[(1, 20217444), (2, 10108722), (3, 6739148), (4, 5054361), (6, 3369574), (12, 1684787), (13, 1555188), (19, 1064076), (26, 777594), (38, 532038), (39, 518396), (52, 388797), (57, 354692), (76, 266019), (78, 259198), (114, 177346), (156, 129599), (228, 88673), (247, 81852), (359, 56316), (361, 56004), (494, 40926), (718, 28158), (722, 28002), (741, 27284), (988, 20463), (1077, 18772), (1083, 18668), (1436, 14079), (1444, 14001), (1482, 13642), (2154, 9386), (2166, 9334), (2964, 6821), (4308, 4693), (4332, 4667)]