20865420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6101}}^1$

素因数の和:6135

約数の個数: 72

約数和(自身を含む): 66633840

約数和(自身を除く): 45768420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 6101, 12202, 18303, 24404, 30505, 36606, 54909, 61010, 73212, 91515, 109818, 115919, 122020, 183030, 219636, 231838, 274545, 347757, 366060, 463676, 549090, 579595, 695514, 1043271, 1098180, 1159190, 1391028, 1738785, 2086542, 2318380, 3477570, 4173084, 5216355, 6955140, 10432710, 20865420]

約数ペア:

[(1, 20865420), (2, 10432710), (3, 6955140), (4, 5216355), (5, 4173084), (6, 3477570), (9, 2318380), (10, 2086542), (12, 1738785), (15, 1391028), (18, 1159190), (19, 1098180), (20, 1043271), (30, 695514), (36, 579595), (38, 549090), (45, 463676), (57, 366060), (60, 347757), (76, 274545), (90, 231838), (95, 219636), (114, 183030), (171, 122020), (180, 115919), (190, 109818), (228, 91515), (285, 73212), (342, 61010), (380, 54909), (570, 36606), (684, 30505), (855, 24404), (1140, 18303), (1710, 12202), (3420, 6101)]