217395220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{4993}}^1$

素因数の和:5320

約数の個数: 48

約数和(自身を含む): 523531008

約数和(自身を除く): 306135788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 311, 622, 1244, 1555, 2177, 3110, 4354, 4993, 6220, 8708, 9986, 10885, 19972, 21770, 24965, 34951, 43540, 49930, 69902, 99860, 139804, 174755, 349510, 699020, 1552823, 3105646, 6211292, 7764115, 10869761, 15528230, 21739522, 31056460, 43479044, 54348805, 108697610, 217395220]

約数ペア:

[(1, 217395220), (2, 108697610), (4, 54348805), (5, 43479044), (7, 31056460), (10, 21739522), (14, 15528230), (20, 10869761), (28, 7764115), (35, 6211292), (70, 3105646), (140, 1552823), (311, 699020), (622, 349510), (1244, 174755), (1555, 139804), (2177, 99860), (3110, 69902), (4354, 49930), (4993, 43540), (6220, 34951), (8708, 24965), (9986, 21770), (10885, 19972)]