31381400

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 96

約数和(自身を含む): 77338800

約数和(自身を除く): 45957400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 43, 50, 82, 86, 89, 100, 164, 172, 178, 200, 205, 215, 328, 344, 356, 410, 430, 445, 712, 820, 860, 890, 1025, 1075, 1640, 1720, 1763, 1780, 2050, 2150, 2225, 3526, 3560, 3649, 3827, 4100, 4300, 4450, 7052, 7298, 7654, 8200, 8600, 8815, 8900, 14104, 14596, 15308, 17630, 17800, 18245, 19135, 29192, 30616, 35260, 36490, 38270, 44075, 70520, 72980, 76540, 88150, 91225, 95675, 145960, 153080, 156907, 176300, 182450, 191350, 313814, 352600, 364900, 382700, 627628, 729800, 765400, 784535, 1255256, 1569070, 3138140, 3922675, 6276280, 7845350, 15690700, 31381400]

約数ペア:

[(1, 31381400), (2, 15690700), (4, 7845350), (5, 6276280), (8, 3922675), (10, 3138140), (20, 1569070), (25, 1255256), (40, 784535), (41, 765400), (43, 729800), (50, 627628), (82, 382700), (86, 364900), (89, 352600), (100, 313814), (164, 191350), (172, 182450), (178, 176300), (200, 156907), (205, 153080), (215, 145960), (328, 95675), (344, 91225), (356, 88150), (410, 76540), (430, 72980), (445, 70520), (712, 44075), (820, 38270), (860, 36490), (890, 35260), (1025, 30616), (1075, 29192), (1640, 19135), (1720, 18245), (1763, 17800), (1780, 17630), (2050, 15308), (2150, 14596), (2225, 14104), (3526, 8900), (3560, 8815), (3649, 8600), (3827, 8200), (4100, 7654), (4300, 7298), (4450, 7052)]