21219780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{4261}}^1$

素因数の和:4356

約数の個数: 48

約数和(自身を含む): 60145344

約数和(自身を除く): 38925564

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 83, 166, 249, 332, 415, 498, 830, 996, 1245, 1660, 2490, 4261, 4980, 8522, 12783, 17044, 21305, 25566, 42610, 51132, 63915, 85220, 127830, 255660, 353663, 707326, 1060989, 1414652, 1768315, 2121978, 3536630, 4243956, 5304945, 7073260, 10609890, 21219780]

約数ペア:

[(1, 21219780), (2, 10609890), (3, 7073260), (4, 5304945), (5, 4243956), (6, 3536630), (10, 2121978), (12, 1768315), (15, 1414652), (20, 1060989), (30, 707326), (60, 353663), (83, 255660), (166, 127830), (249, 85220), (332, 63915), (415, 51132), (498, 42610), (830, 25566), (996, 21305), (1245, 17044), (1660, 12783), (2490, 8522), (4261, 4980)]