21208750

素因数分解:

$2^1\times 5^4\times {\mathrm{19}}^2\times {\mathrm{47}}^1$

素因数の和:107

約数の個数: 60

約数和(自身を含む): 42848784

約数和(自身を除く): 21640034

約数列:

[1, 2, 5, 10, 19, 25, 38, 47, 50, 94, 95, 125, 190, 235, 250, 361, 470, 475, 625, 722, 893, 950, 1175, 1250, 1786, 1805, 2350, 2375, 3610, 4465, 4750, 5875, 8930, 9025, 11750, 11875, 16967, 18050, 22325, 23750, 29375, 33934, 44650, 45125, 58750, 84835, 90250, 111625, 169670, 223250, 225625, 424175, 451250, 558125, 848350, 1116250, 2120875, 4241750, 10604375, 21208750]

約数ペア:

[(1, 21208750), (2, 10604375), (5, 4241750), (10, 2120875), (19, 1116250), (25, 848350), (38, 558125), (47, 451250), (50, 424175), (94, 225625), (95, 223250), (125, 169670), (190, 111625), (235, 90250), (250, 84835), (361, 58750), (470, 45125), (475, 44650), (625, 33934), (722, 29375), (893, 23750), (950, 22325), (1175, 18050), (1250, 16967), (1786, 11875), (1805, 11750), (2350, 9025), (2375, 8930), (3610, 5875), (4465, 4750)]