20297320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1571}}^1$

素因数の和:1618

約数の個数: 64

約数和(自身を含む): 50932800

約数和(自身を除く): 30635480

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1571, 1615, 2584, 3142, 3230, 6284, 6460, 7855, 12568, 12920, 15710, 26707, 29849, 31420, 53414, 59698, 62840, 106828, 119396, 133535, 149245, 213656, 238792, 267070, 298490, 507433, 534140, 596980, 1014866, 1068280, 1193960, 2029732, 2537165, 4059464, 5074330, 10148660, 20297320]

約数ペア:

[(1, 20297320), (2, 10148660), (4, 5074330), (5, 4059464), (8, 2537165), (10, 2029732), (17, 1193960), (19, 1068280), (20, 1014866), (34, 596980), (38, 534140), (40, 507433), (68, 298490), (76, 267070), (85, 238792), (95, 213656), (136, 149245), (152, 133535), (170, 119396), (190, 106828), (323, 62840), (340, 59698), (380, 53414), (646, 31420), (680, 29849), (760, 26707), (1292, 15710), (1571, 12920), (1615, 12568), (2584, 7855), (3142, 6460), (3230, 6284)]