157421720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1607}}^1$

素因数の和:1728

約数の個数: 64

約数和(自身を含む): 370483200

約数和(自身を除く): 213061480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 79, 124, 155, 158, 248, 310, 316, 395, 620, 632, 790, 1240, 1580, 1607, 2449, 3160, 3214, 4898, 6428, 8035, 9796, 12245, 12856, 16070, 19592, 24490, 32140, 48980, 49817, 64280, 97960, 99634, 126953, 199268, 249085, 253906, 398536, 498170, 507812, 634765, 996340, 1015624, 1269530, 1992680, 2539060, 3935543, 5078120, 7871086, 15742172, 19677715, 31484344, 39355430, 78710860, 157421720]

約数ペア:

[(1, 157421720), (2, 78710860), (4, 39355430), (5, 31484344), (8, 19677715), (10, 15742172), (20, 7871086), (31, 5078120), (40, 3935543), (62, 2539060), (79, 1992680), (124, 1269530), (155, 1015624), (158, 996340), (248, 634765), (310, 507812), (316, 498170), (395, 398536), (620, 253906), (632, 249085), (790, 199268), (1240, 126953), (1580, 99634), (1607, 97960), (2449, 64280), (3160, 49817), (3214, 48980), (4898, 32140), (6428, 24490), (8035, 19592), (9796, 16070), (12245, 12856)]