20295420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{937}}^1$

素因数の和:987

約数の個数: 72

約数和(自身を含む): 60039504

約数和(自身を除く): 39744084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 361, 380, 570, 722, 937, 1083, 1140, 1444, 1805, 1874, 2166, 2811, 3610, 3748, 4332, 4685, 5415, 5622, 7220, 9370, 10830, 11244, 14055, 17803, 18740, 21660, 28110, 35606, 53409, 56220, 71212, 89015, 106818, 178030, 213636, 267045, 338257, 356060, 534090, 676514, 1014771, 1068180, 1353028, 1691285, 2029542, 3382570, 4059084, 5073855, 6765140, 10147710, 20295420]

約数ペア:

[(1, 20295420), (2, 10147710), (3, 6765140), (4, 5073855), (5, 4059084), (6, 3382570), (10, 2029542), (12, 1691285), (15, 1353028), (19, 1068180), (20, 1014771), (30, 676514), (38, 534090), (57, 356060), (60, 338257), (76, 267045), (95, 213636), (114, 178030), (190, 106818), (228, 89015), (285, 71212), (361, 56220), (380, 53409), (570, 35606), (722, 28110), (937, 21660), (1083, 18740), (1140, 17803), (1444, 14055), (1805, 11244), (1874, 10830), (2166, 9370), (2811, 7220), (3610, 5622), (3748, 5415), (4332, 4685)]