19713304

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 42134400

約数和(自身を除く): 22421096

約数列:

[1, 2, 4, 8, 13, 26, 37, 47, 52, 74, 94, 104, 109, 148, 188, 218, 296, 376, 436, 481, 611, 872, 962, 1222, 1417, 1739, 1924, 2444, 2834, 3478, 3848, 4033, 4888, 5123, 5668, 6956, 8066, 10246, 11336, 13912, 16132, 20492, 22607, 32264, 40984, 45214, 52429, 66599, 90428, 104858, 133198, 180856, 189551, 209716, 266396, 379102, 419432, 532792, 758204, 1516408, 2464163, 4928326, 9856652, 19713304]

約数ペア:

[(1, 19713304), (2, 9856652), (4, 4928326), (8, 2464163), (13, 1516408), (26, 758204), (37, 532792), (47, 419432), (52, 379102), (74, 266396), (94, 209716), (104, 189551), (109, 180856), (148, 133198), (188, 104858), (218, 90428), (296, 66599), (376, 52429), (436, 45214), (481, 40984), (611, 32264), (872, 22607), (962, 20492), (1222, 16132), (1417, 13912), (1739, 11336), (1924, 10246), (2444, 8066), (2834, 6956), (3478, 5668), (3848, 5123), (4033, 4888)]