20219420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4093}}^1$

素因数の和:4134

約数の個数: 48

約数和(自身を含む): 48145440

約数和(自身を除く): 27926020

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4093, 4940, 8186, 16372, 20465, 40930, 53209, 77767, 81860, 106418, 155534, 212836, 266045, 311068, 388835, 532090, 777670, 1010971, 1064180, 1555340, 2021942, 4043884, 5054855, 10109710, 20219420]

約数ペア:

[(1, 20219420), (2, 10109710), (4, 5054855), (5, 4043884), (10, 2021942), (13, 1555340), (19, 1064180), (20, 1010971), (26, 777670), (38, 532090), (52, 388835), (65, 311068), (76, 266045), (95, 212836), (130, 155534), (190, 106418), (247, 81860), (260, 77767), (380, 53209), (494, 40930), (988, 20465), (1235, 16372), (2470, 8186), (4093, 4940)]