81815880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{18427}}^1$

素因数の和:18478

約数の個数: 64

約数和(自身を含む): 252095040

約数和(自身を除く): 170279160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 148, 185, 222, 296, 370, 444, 555, 740, 888, 1110, 1480, 2220, 4440, 18427, 36854, 55281, 73708, 92135, 110562, 147416, 184270, 221124, 276405, 368540, 442248, 552810, 681799, 737080, 1105620, 1363598, 2045397, 2211240, 2727196, 3408995, 4090794, 5454392, 6817990, 8181588, 10226985, 13635980, 16363176, 20453970, 27271960, 40907940, 81815880]

約数ペア:

[(1, 81815880), (2, 40907940), (3, 27271960), (4, 20453970), (5, 16363176), (6, 13635980), (8, 10226985), (10, 8181588), (12, 6817990), (15, 5454392), (20, 4090794), (24, 3408995), (30, 2727196), (37, 2211240), (40, 2045397), (60, 1363598), (74, 1105620), (111, 737080), (120, 681799), (148, 552810), (185, 442248), (222, 368540), (296, 276405), (370, 221124), (444, 184270), (555, 147416), (740, 110562), (888, 92135), (1110, 73708), (1480, 55281), (2220, 36854), (4440, 18427)]