138720140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{28081}}^1$

素因数の和:28122

約数の個数: 48

約数和(自身を含む): 330244320

約数和(自身を除く): 191524180

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, 4940, 28081, 56162, 112324, 140405, 280810, 365053, 533539, 561620, 730106, 1067078, 1460212, 1825265, 2134156, 2667695, 3650530, 5335390, 6936007, 7301060, 10670780, 13872014, 27744028, 34680035, 69360070, 138720140]

約数ペア:

[(1, 138720140), (2, 69360070), (4, 34680035), (5, 27744028), (10, 13872014), (13, 10670780), (19, 7301060), (20, 6936007), (26, 5335390), (38, 3650530), (52, 2667695), (65, 2134156), (76, 1825265), (95, 1460212), (130, 1067078), (190, 730106), (247, 561620), (260, 533539), (380, 365053), (494, 280810), (988, 140405), (1235, 112324), (2470, 56162), (4940, 28081)]