20303800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^2\times {\mathrm{839}}^1$

素因数の和:877

約数の個数: 72

約数和(自身を含む): 51949800

約数和(自身を除く): 31646000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 121, 200, 220, 242, 275, 440, 484, 550, 605, 839, 968, 1100, 1210, 1678, 2200, 2420, 3025, 3356, 4195, 4840, 6050, 6712, 8390, 9229, 12100, 16780, 18458, 20975, 24200, 33560, 36916, 41950, 46145, 73832, 83900, 92290, 101519, 167800, 184580, 203038, 230725, 369160, 406076, 461450, 507595, 812152, 922900, 1015190, 1845800, 2030380, 2537975, 4060760, 5075950, 10151900, 20303800]

約数ペア:

[(1, 20303800), (2, 10151900), (4, 5075950), (5, 4060760), (8, 2537975), (10, 2030380), (11, 1845800), (20, 1015190), (22, 922900), (25, 812152), (40, 507595), (44, 461450), (50, 406076), (55, 369160), (88, 230725), (100, 203038), (110, 184580), (121, 167800), (200, 101519), (220, 92290), (242, 83900), (275, 73832), (440, 46145), (484, 41950), (550, 36916), (605, 33560), (839, 24200), (968, 20975), (1100, 18458), (1210, 16780), (1678, 12100), (2200, 9229), (2420, 8390), (3025, 6712), (3356, 6050), (4195, 4840)]