217798980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{809}}^1$

素因数の和:1469

約数の個数: 96

約数和(自身を含む): 698906880

約数和(自身を除く): 481107900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 641, 809, 1282, 1618, 1923, 2427, 2564, 3205, 3236, 3846, 4045, 4487, 4854, 5663, 6410, 7692, 8090, 8974, 9615, 9708, 11326, 12135, 12820, 13461, 16180, 16989, 17948, 19230, 22435, 22652, 24270, 26922, 28315, 33978, 38460, 44870, 48540, 53844, 56630, 67305, 67956, 84945, 89740, 113260, 134610, 169890, 269220, 339780, 518569, 1037138, 1555707, 2074276, 2592845, 3111414, 3629983, 5185690, 6222828, 7259966, 7778535, 10371380, 10889949, 14519932, 15557070, 18149915, 21779898, 31114140, 36299830, 43559796, 54449745, 72599660, 108899490, 217798980]

約数ペア:

[(1, 217798980), (2, 108899490), (3, 72599660), (4, 54449745), (5, 43559796), (6, 36299830), (7, 31114140), (10, 21779898), (12, 18149915), (14, 15557070), (15, 14519932), (20, 10889949), (21, 10371380), (28, 7778535), (30, 7259966), (35, 6222828), (42, 5185690), (60, 3629983), (70, 3111414), (84, 2592845), (105, 2074276), (140, 1555707), (210, 1037138), (420, 518569), (641, 339780), (809, 269220), (1282, 169890), (1618, 134610), (1923, 113260), (2427, 89740), (2564, 84945), (3205, 67956), (3236, 67305), (3846, 56630), (4045, 53844), (4487, 48540), (4854, 44870), (5663, 38460), (6410, 33978), (7692, 28315), (8090, 26922), (8974, 24270), (9615, 22652), (9708, 22435), (11326, 19230), (12135, 17948), (12820, 16989), (13461, 16180)]