28104021

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 47523840

約数和(自身を除く): 19419819

約数列:

[1, 3, 9, 11, 19, 33, 57, 67, 99, 171, 201, 209, 223, 603, 627, 669, 737, 1273, 1881, 2007, 2211, 2453, 3819, 4237, 6633, 7359, 11457, 12711, 14003, 14941, 22077, 38133, 42009, 44823, 46607, 126027, 134469, 139821, 164351, 283879, 419463, 493053, 851637, 1479159, 2554911, 3122669, 9368007, 28104021]

約数ペア:

[(1, 28104021), (3, 9368007), (9, 3122669), (11, 2554911), (19, 1479159), (33, 851637), (57, 493053), (67, 419463), (99, 283879), (171, 164351), (201, 139821), (209, 134469), (223, 126027), (603, 46607), (627, 44823), (669, 42009), (737, 38133), (1273, 22077), (1881, 14941), (2007, 14003), (2211, 12711), (2453, 11457), (3819, 7359), (4237, 6633)]