90438140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{6563}}^1$

素因数の和:6638

約数の個数: 48

約数和(自身を含む): 208420128

約数和(自身を除く): 117981988

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1378, 2756, 3445, 6563, 6890, 13126, 13780, 26252, 32815, 65630, 85319, 131260, 170638, 341276, 347839, 426595, 695678, 853190, 1391356, 1706380, 1739195, 3478390, 4521907, 6956780, 9043814, 18087628, 22609535, 45219070, 90438140]

約数ペア:

[(1, 90438140), (2, 45219070), (4, 22609535), (5, 18087628), (10, 9043814), (13, 6956780), (20, 4521907), (26, 3478390), (52, 1739195), (53, 1706380), (65, 1391356), (106, 853190), (130, 695678), (212, 426595), (260, 347839), (265, 341276), (530, 170638), (689, 131260), (1060, 85319), (1378, 65630), (2756, 32815), (3445, 26252), (6563, 13780), (6890, 13126)]