128460860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{109}}^1\times {\mathrm{487}}^1$

素因数の和:627

約数の個数: 72

約数和(自身を含む): 299856480

約数和(自身を除く): 171395620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 121, 218, 220, 242, 436, 484, 487, 545, 605, 974, 1090, 1199, 1210, 1948, 2180, 2398, 2420, 2435, 4796, 4870, 5357, 5995, 9740, 10714, 11990, 13189, 21428, 23980, 26378, 26785, 52756, 53083, 53570, 58927, 65945, 106166, 107140, 117854, 131890, 212332, 235708, 263780, 265415, 294635, 530830, 583913, 589270, 1061660, 1167826, 1178540, 2335652, 2919565, 5839130, 6423043, 11678260, 12846086, 25692172, 32115215, 64230430, 128460860]

約数ペア:

[(1, 128460860), (2, 64230430), (4, 32115215), (5, 25692172), (10, 12846086), (11, 11678260), (20, 6423043), (22, 5839130), (44, 2919565), (55, 2335652), (109, 1178540), (110, 1167826), (121, 1061660), (218, 589270), (220, 583913), (242, 530830), (436, 294635), (484, 265415), (487, 263780), (545, 235708), (605, 212332), (974, 131890), (1090, 117854), (1199, 107140), (1210, 106166), (1948, 65945), (2180, 58927), (2398, 53570), (2420, 53083), (2435, 52756), (4796, 26785), (4870, 26378), (5357, 23980), (5995, 21428), (9740, 13189), (10714, 11990)]