21911200

素因数分解:

$2^5\times 5^2\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:530

約数の個数: 72

約数和(自身を含む): 54488700

約数和(自身を除く): 32577500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 61, 80, 100, 122, 160, 200, 244, 305, 400, 449, 488, 610, 800, 898, 976, 1220, 1525, 1796, 1952, 2245, 2440, 3050, 3592, 4490, 4880, 6100, 7184, 8980, 9760, 11225, 12200, 14368, 17960, 22450, 24400, 27389, 35920, 44900, 48800, 54778, 71840, 89800, 109556, 136945, 179600, 219112, 273890, 359200, 438224, 547780, 684725, 876448, 1095560, 1369450, 2191120, 2738900, 4382240, 5477800, 10955600, 21911200]

約数ペア:

[(1, 21911200), (2, 10955600), (4, 5477800), (5, 4382240), (8, 2738900), (10, 2191120), (16, 1369450), (20, 1095560), (25, 876448), (32, 684725), (40, 547780), (50, 438224), (61, 359200), (80, 273890), (100, 219112), (122, 179600), (160, 136945), (200, 109556), (244, 89800), (305, 71840), (400, 54778), (449, 48800), (488, 44900), (610, 35920), (800, 27389), (898, 24400), (976, 22450), (1220, 17960), (1525, 14368), (1796, 12200), (1952, 11225), (2245, 9760), (2440, 8980), (3050, 7184), (3592, 6100), (4490, 4880)]