80131280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:532

約数の個数: 80

約数和(自身を含む): 195225600

約数和(自身を除く): 115094320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 79, 80, 124, 155, 158, 248, 310, 316, 395, 409, 496, 620, 632, 790, 818, 1240, 1264, 1580, 1636, 2045, 2449, 2480, 3160, 3272, 4090, 4898, 6320, 6544, 8180, 9796, 12245, 12679, 16360, 19592, 24490, 25358, 32311, 32720, 39184, 48980, 50716, 63395, 64622, 97960, 101432, 126790, 129244, 161555, 195920, 202864, 253580, 258488, 323110, 507160, 516976, 646220, 1001641, 1014320, 1292440, 2003282, 2584880, 4006564, 5008205, 8013128, 10016410, 16026256, 20032820, 40065640, 80131280]

約数ペア:

[(1, 80131280), (2, 40065640), (4, 20032820), (5, 16026256), (8, 10016410), (10, 8013128), (16, 5008205), (20, 4006564), (31, 2584880), (40, 2003282), (62, 1292440), (79, 1014320), (80, 1001641), (124, 646220), (155, 516976), (158, 507160), (248, 323110), (310, 258488), (316, 253580), (395, 202864), (409, 195920), (496, 161555), (620, 129244), (632, 126790), (790, 101432), (818, 97960), (1240, 64622), (1264, 63395), (1580, 50716), (1636, 48980), (2045, 39184), (2449, 32720), (2480, 32311), (3160, 25358), (3272, 24490), (4090, 19592), (4898, 16360), (6320, 12679), (6544, 12245), (8180, 9796)]