20432835980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{386839}}^1$

素因数の和:387006

約数の個数: 48

約数和(自身を含む): 45492384000

約数和(自身を除く): 25059548020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 190, 278, 380, 556, 695, 1390, 2641, 2780, 5282, 10564, 13205, 26410, 52820, 386839, 773678, 1547356, 1934195, 3868390, 7349941, 7736780, 14699882, 29399764, 36749705, 53770621, 73499410, 107541242, 146998820, 215082484, 268853105, 537706210, 1021641799, 1075412420, 2043283598, 4086567196, 5108208995, 10216417990, 20432835980]

約数ペア:

[(1, 20432835980), (2, 10216417990), (4, 5108208995), (5, 4086567196), (10, 2043283598), (19, 1075412420), (20, 1021641799), (38, 537706210), (76, 268853105), (95, 215082484), (139, 146998820), (190, 107541242), (278, 73499410), (380, 53770621), (556, 36749705), (695, 29399764), (1390, 14699882), (2641, 7736780), (2780, 7349941), (5282, 3868390), (10564, 1934195), (13205, 1547356), (26410, 773678), (52820, 386839)]