26199820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{359}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 57153600

約数和(自身を除く): 30953780

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 164, 178, 205, 356, 359, 410, 445, 718, 820, 890, 1436, 1780, 1795, 3590, 3649, 7180, 7298, 14596, 14719, 18245, 29438, 31951, 36490, 58876, 63902, 72980, 73595, 127804, 147190, 159755, 294380, 319510, 639020, 1309991, 2619982, 5239964, 6549955, 13099910, 26199820]

約数ペア:

[(1, 26199820), (2, 13099910), (4, 6549955), (5, 5239964), (10, 2619982), (20, 1309991), (41, 639020), (82, 319510), (89, 294380), (164, 159755), (178, 147190), (205, 127804), (356, 73595), (359, 72980), (410, 63902), (445, 58876), (718, 36490), (820, 31951), (890, 29438), (1436, 18245), (1780, 14719), (1795, 14596), (3590, 7298), (3649, 7180)]