20989110

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1601}}^1$

素因数の和:1653

約数の個数: 64

約数和(自身を含む): 55365120

約数和(自身を除く): 34376010

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 23, 30, 38, 46, 57, 69, 95, 114, 115, 138, 190, 230, 285, 345, 437, 570, 690, 874, 1311, 1601, 2185, 2622, 3202, 4370, 4803, 6555, 8005, 9606, 13110, 16010, 24015, 30419, 36823, 48030, 60838, 73646, 91257, 110469, 152095, 182514, 184115, 220938, 304190, 368230, 456285, 552345, 699637, 912570, 1104690, 1399274, 2098911, 3498185, 4197822, 6996370, 10494555, 20989110]

約数ペア:

[(1, 20989110), (2, 10494555), (3, 6996370), (5, 4197822), (6, 3498185), (10, 2098911), (15, 1399274), (19, 1104690), (23, 912570), (30, 699637), (38, 552345), (46, 456285), (57, 368230), (69, 304190), (95, 220938), (114, 184115), (115, 182514), (138, 152095), (190, 110469), (230, 91257), (285, 73646), (345, 60838), (437, 48030), (570, 36823), (690, 30419), (874, 24015), (1311, 16010), (1601, 13110), (2185, 9606), (2622, 8005), (3202, 6555), (4370, 4803)]