21787444820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{414683}}^1$

素因数の和:414800

約数の個数: 48

約数和(自身を含む): 47652167808

約数和(自身を除く): 25864722988

約数列:

[1, 2, 4, 5, 10, 20, 37, 71, 74, 142, 148, 185, 284, 355, 370, 710, 740, 1420, 2627, 5254, 10508, 13135, 26270, 52540, 414683, 829366, 1658732, 2073415, 4146830, 8293660, 15343271, 29442493, 30686542, 58884986, 61373084, 76716355, 117769972, 147212465, 153432710, 294424930, 306865420, 588849860, 1089372241, 2178744482, 4357488964, 5446861205, 10893722410, 21787444820]

約数ペア:

[(1, 21787444820), (2, 10893722410), (4, 5446861205), (5, 4357488964), (10, 2178744482), (20, 1089372241), (37, 588849860), (71, 306865420), (74, 294424930), (142, 153432710), (148, 147212465), (185, 117769972), (284, 76716355), (355, 61373084), (370, 58884986), (710, 30686542), (740, 29442493), (1420, 15343271), (2627, 8293660), (5254, 4146830), (10508, 2073415), (13135, 1658732), (26270, 829366), (52540, 414683)]