80204750

素因数分解:

$2^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 158146560

約数和(自身を除く): 77941810

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 79, 125, 131, 155, 158, 250, 262, 310, 395, 655, 775, 790, 1310, 1550, 1975, 2449, 3275, 3875, 3950, 4061, 4898, 6550, 7750, 8122, 9875, 10349, 12245, 16375, 19750, 20305, 20698, 24490, 32750, 40610, 51745, 61225, 101525, 103490, 122450, 203050, 258725, 306125, 320819, 507625, 517450, 612250, 641638, 1015250, 1293625, 1604095, 2587250, 3208190, 8020475, 16040950, 40102375, 80204750]

約数ペア:

[(1, 80204750), (2, 40102375), (5, 16040950), (10, 8020475), (25, 3208190), (31, 2587250), (50, 1604095), (62, 1293625), (79, 1015250), (125, 641638), (131, 612250), (155, 517450), (158, 507625), (250, 320819), (262, 306125), (310, 258725), (395, 203050), (655, 122450), (775, 103490), (790, 101525), (1310, 61225), (1550, 51745), (1975, 40610), (2449, 32750), (3275, 24490), (3875, 20698), (3950, 20305), (4061, 19750), (4898, 16375), (6550, 12245), (7750, 10349), (8122, 9875)]