131561840

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{563}}^1$

素因数の和:726

約数の個数: 80

約数和(自身を含む): 322265088

約数和(自身を除く): 190703248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 127, 184, 230, 254, 368, 460, 508, 563, 635, 920, 1016, 1126, 1270, 1840, 2032, 2252, 2540, 2815, 2921, 4504, 5080, 5630, 5842, 9008, 10160, 11260, 11684, 12949, 14605, 22520, 23368, 25898, 29210, 45040, 46736, 51796, 58420, 64745, 71501, 103592, 116840, 129490, 143002, 207184, 233680, 258980, 286004, 357505, 517960, 572008, 715010, 1035920, 1144016, 1430020, 1644523, 2860040, 3289046, 5720080, 6578092, 8222615, 13156184, 16445230, 26312368, 32890460, 65780920, 131561840]

約数ペア:

[(1, 131561840), (2, 65780920), (4, 32890460), (5, 26312368), (8, 16445230), (10, 13156184), (16, 8222615), (20, 6578092), (23, 5720080), (40, 3289046), (46, 2860040), (80, 1644523), (92, 1430020), (115, 1144016), (127, 1035920), (184, 715010), (230, 572008), (254, 517960), (368, 357505), (460, 286004), (508, 258980), (563, 233680), (635, 207184), (920, 143002), (1016, 129490), (1126, 116840), (1270, 103592), (1840, 71501), (2032, 64745), (2252, 58420), (2540, 51796), (2815, 46736), (2921, 45040), (4504, 29210), (5080, 25898), (5630, 23368), (5842, 22520), (9008, 14605), (10160, 12949), (11260, 11684)]