28911160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{349}}^1$

素因数の和:488

約数の個数: 64

約数和(自身を含む): 69300000

約数和(自身を除く): 40388840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 109, 152, 190, 218, 349, 380, 436, 545, 698, 760, 872, 1090, 1396, 1745, 2071, 2180, 2792, 3490, 4142, 4360, 6631, 6980, 8284, 10355, 13262, 13960, 16568, 20710, 26524, 33155, 38041, 41420, 53048, 66310, 76082, 82840, 132620, 152164, 190205, 265240, 304328, 380410, 722779, 760820, 1445558, 1521640, 2891116, 3613895, 5782232, 7227790, 14455580, 28911160]

約数ペア:

[(1, 28911160), (2, 14455580), (4, 7227790), (5, 5782232), (8, 3613895), (10, 2891116), (19, 1521640), (20, 1445558), (38, 760820), (40, 722779), (76, 380410), (95, 304328), (109, 265240), (152, 190205), (190, 152164), (218, 132620), (349, 82840), (380, 76082), (436, 66310), (545, 53048), (698, 41420), (760, 38041), (872, 33155), (1090, 26524), (1396, 20710), (1745, 16568), (2071, 13960), (2180, 13262), (2792, 10355), (3490, 8284), (4142, 6980), (4360, 6631)]