18388700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 44320080

約数和(自身を除く): 25931380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 73, 100, 110, 146, 220, 229, 275, 292, 365, 458, 550, 730, 803, 916, 1100, 1145, 1460, 1606, 1825, 2290, 2519, 3212, 3650, 4015, 4580, 5038, 5725, 7300, 8030, 10076, 11450, 12595, 16060, 16717, 20075, 22900, 25190, 33434, 40150, 50380, 62975, 66868, 80300, 83585, 125950, 167170, 183887, 251900, 334340, 367774, 417925, 735548, 835850, 919435, 1671700, 1838870, 3677740, 4597175, 9194350, 18388700]

約数ペア:

[(1, 18388700), (2, 9194350), (4, 4597175), (5, 3677740), (10, 1838870), (11, 1671700), (20, 919435), (22, 835850), (25, 735548), (44, 417925), (50, 367774), (55, 334340), (73, 251900), (100, 183887), (110, 167170), (146, 125950), (220, 83585), (229, 80300), (275, 66868), (292, 62975), (365, 50380), (458, 40150), (550, 33434), (730, 25190), (803, 22900), (916, 20075), (1100, 16717), (1145, 16060), (1460, 12595), (1606, 11450), (1825, 10076), (2290, 8030), (2519, 7300), (3212, 5725), (3650, 5038), (4015, 4580)]