18987460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1723}}^1$

素因数の和:1780

約数の個数: 48

約数和(自身を含む): 43444800

約数和(自身を除く): 24457340

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 95, 116, 145, 190, 290, 380, 551, 580, 1102, 1723, 2204, 2755, 3446, 5510, 6892, 8615, 11020, 17230, 32737, 34460, 49967, 65474, 99934, 130948, 163685, 199868, 249835, 327370, 499670, 654740, 949373, 999340, 1898746, 3797492, 4746865, 9493730, 18987460]

約数ペア:

[(1, 18987460), (2, 9493730), (4, 4746865), (5, 3797492), (10, 1898746), (19, 999340), (20, 949373), (29, 654740), (38, 499670), (58, 327370), (76, 249835), (95, 199868), (116, 163685), (145, 130948), (190, 99934), (290, 65474), (380, 49967), (551, 34460), (580, 32737), (1102, 17230), (1723, 11020), (2204, 8615), (2755, 6892), (3446, 5510)]