21755800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:98

約数の個数: 144

約数和(自身を含む): 59371200

約数和(自身を除く): 37615400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 29, 31, 40, 44, 50, 55, 58, 62, 88, 100, 110, 116, 121, 124, 145, 155, 200, 220, 232, 242, 248, 275, 290, 310, 319, 341, 440, 484, 550, 580, 605, 620, 638, 682, 725, 775, 899, 968, 1100, 1160, 1210, 1240, 1276, 1364, 1450, 1550, 1595, 1705, 1798, 2200, 2420, 2552, 2728, 2900, 3025, 3100, 3190, 3410, 3509, 3596, 3751, 4495, 4840, 5800, 6050, 6200, 6380, 6820, 7018, 7192, 7502, 7975, 8525, 8990, 9889, 12100, 12760, 13640, 14036, 15004, 15950, 17050, 17545, 17980, 18755, 19778, 22475, 24200, 28072, 30008, 31900, 34100, 35090, 35960, 37510, 39556, 44950, 49445, 63800, 68200, 70180, 75020, 79112, 87725, 89900, 93775, 98890, 108779, 140360, 150040, 175450, 179800, 187550, 197780, 217558, 247225, 350900, 375100, 395560, 435116, 494450, 543895, 701800, 750200, 870232, 988900, 1087790, 1977800, 2175580, 2719475, 4351160, 5438950, 10877900, 21755800]

約数ペア:

[(1, 21755800), (2, 10877900), (4, 5438950), (5, 4351160), (8, 2719475), (10, 2175580), (11, 1977800), (20, 1087790), (22, 988900), (25, 870232), (29, 750200), (31, 701800), (40, 543895), (44, 494450), (50, 435116), (55, 395560), (58, 375100), (62, 350900), (88, 247225), (100, 217558), (110, 197780), (116, 187550), (121, 179800), (124, 175450), (145, 150040), (155, 140360), (200, 108779), (220, 98890), (232, 93775), (242, 89900), (248, 87725), (275, 79112), (290, 75020), (310, 70180), (319, 68200), (341, 63800), (440, 49445), (484, 44950), (550, 39556), (580, 37510), (605, 35960), (620, 35090), (638, 34100), (682, 31900), (725, 30008), (775, 28072), (899, 24200), (968, 22475), (1100, 19778), (1160, 18755), (1210, 17980), (1240, 17545), (1276, 17050), (1364, 15950), (1450, 15004), (1550, 14036), (1595, 13640), (1705, 12760), (1798, 12100), (2200, 9889), (2420, 8990), (2552, 8525), (2728, 7975), (2900, 7502), (3025, 7192), (3100, 7018), (3190, 6820), (3410, 6380), (3509, 6200), (3596, 6050), (3751, 5800), (4495, 4840)]