1961560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:148

約数の個数: 64

約数和(自身を含む): 4860000

約数和(自身を除く): 2898440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 38, 40, 58, 76, 89, 95, 116, 145, 152, 178, 190, 232, 290, 356, 380, 445, 551, 580, 712, 760, 890, 1102, 1160, 1691, 1780, 2204, 2581, 2755, 3382, 3560, 4408, 5162, 5510, 6764, 8455, 10324, 11020, 12905, 13528, 16910, 20648, 22040, 25810, 33820, 49039, 51620, 67640, 98078, 103240, 196156, 245195, 392312, 490390, 980780, 1961560]

約数ペア:

[(1, 1961560), (2, 980780), (4, 490390), (5, 392312), (8, 245195), (10, 196156), (19, 103240), (20, 98078), (29, 67640), (38, 51620), (40, 49039), (58, 33820), (76, 25810), (89, 22040), (95, 20648), (116, 16910), (145, 13528), (152, 12905), (178, 11020), (190, 10324), (232, 8455), (290, 6764), (356, 5510), (380, 5162), (445, 4408), (551, 3560), (580, 3382), (712, 2755), (760, 2581), (890, 2204), (1102, 1780), (1160, 1691)]