19717136

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{821}}^1$

素因数の和:927

約数の個数: 40

約数和(自身を含む): 40771200

約数和(自身を除く): 21054064

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 79, 152, 158, 304, 316, 632, 821, 1264, 1501, 1642, 3002, 3284, 6004, 6568, 12008, 13136, 15599, 24016, 31198, 62396, 64859, 124792, 129718, 249584, 259436, 518872, 1037744, 1232321, 2464642, 4929284, 9858568, 19717136]

約数ペア:

[(1, 19717136), (2, 9858568), (4, 4929284), (8, 2464642), (16, 1232321), (19, 1037744), (38, 518872), (76, 259436), (79, 249584), (152, 129718), (158, 124792), (304, 64859), (316, 62396), (632, 31198), (821, 24016), (1264, 15599), (1501, 13136), (1642, 12008), (3002, 6568), (3284, 6004)]