398713140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{316439}}^1$

素因数の和:316461

約数の個数: 72

約数和(自身を含む): 1382209920

約数和(自身を除く): 983496780

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 316439, 632878, 949317, 1265756, 1582195, 1898634, 2215073, 2847951, 3164390, 3797268, 4430146, 4746585, 5695902, 6328780, 6645219, 8860292, 9493170, 11075365, 11391804, 13290438, 14239755, 18986340, 19935657, 22150730, 26580876, 28479510, 33226095, 39871314, 44301460, 56959020, 66452190, 79742628, 99678285, 132904380, 199356570, 398713140]

約数ペア:

[(1, 398713140), (2, 199356570), (3, 132904380), (4, 99678285), (5, 79742628), (6, 66452190), (7, 56959020), (9, 44301460), (10, 39871314), (12, 33226095), (14, 28479510), (15, 26580876), (18, 22150730), (20, 19935657), (21, 18986340), (28, 14239755), (30, 13290438), (35, 11391804), (36, 11075365), (42, 9493170), (45, 8860292), (60, 6645219), (63, 6328780), (70, 5695902), (84, 4746585), (90, 4430146), (105, 3797268), (126, 3164390), (140, 2847951), (180, 2215073), (210, 1898634), (252, 1582195), (315, 1265756), (420, 949317), (630, 632878), (1260, 316439)]