20912502

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 48222720

約数和(自身を除く): 27310218

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 57, 78, 103, 114, 137, 206, 247, 274, 309, 411, 494, 618, 741, 822, 1339, 1482, 1781, 1957, 2603, 2678, 3562, 3914, 4017, 5206, 5343, 5871, 7809, 8034, 10686, 11742, 14111, 15618, 25441, 28222, 33839, 42333, 50882, 67678, 76323, 84666, 101517, 152646, 183443, 203034, 268109, 366886, 536218, 550329, 804327, 1100658, 1608654, 3485417, 6970834, 10456251, 20912502]

約数ペア:

[(1, 20912502), (2, 10456251), (3, 6970834), (6, 3485417), (13, 1608654), (19, 1100658), (26, 804327), (38, 550329), (39, 536218), (57, 366886), (78, 268109), (103, 203034), (114, 183443), (137, 152646), (206, 101517), (247, 84666), (274, 76323), (309, 67678), (411, 50882), (494, 42333), (618, 33839), (741, 28222), (822, 25441), (1339, 15618), (1482, 14111), (1781, 11742), (1957, 10686), (2603, 8034), (2678, 7809), (3562, 5871), (3914, 5343), (4017, 5206)]