218641520

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{349}}^1$

素因数の和:594

約数の個数: 80

約数和(自身を含む): 524966400

約数和(自身を除く): 306324880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 191, 205, 328, 349, 382, 410, 656, 698, 764, 820, 955, 1396, 1528, 1640, 1745, 1910, 2792, 3056, 3280, 3490, 3820, 5584, 6980, 7640, 7831, 13960, 14309, 15280, 15662, 27920, 28618, 31324, 39155, 57236, 62648, 66659, 71545, 78310, 114472, 125296, 133318, 143090, 156620, 228944, 266636, 286180, 313240, 333295, 533272, 572360, 626480, 666590, 1066544, 1144720, 1333180, 2666360, 2733019, 5332720, 5466038, 10932076, 13665095, 21864152, 27330190, 43728304, 54660380, 109320760, 218641520]

約数ペア:

[(1, 218641520), (2, 109320760), (4, 54660380), (5, 43728304), (8, 27330190), (10, 21864152), (16, 13665095), (20, 10932076), (40, 5466038), (41, 5332720), (80, 2733019), (82, 2666360), (164, 1333180), (191, 1144720), (205, 1066544), (328, 666590), (349, 626480), (382, 572360), (410, 533272), (656, 333295), (698, 313240), (764, 286180), (820, 266636), (955, 228944), (1396, 156620), (1528, 143090), (1640, 133318), (1745, 125296), (1910, 114472), (2792, 78310), (3056, 71545), (3280, 66659), (3490, 62648), (3820, 57236), (5584, 39155), (6980, 31324), (7640, 28618), (7831, 27920), (13960, 15662), (14309, 15280)]