1377990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 3656016

約数和(自身を除く): 2278026

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 61, 90, 122, 183, 251, 305, 366, 502, 549, 610, 753, 915, 1098, 1255, 1506, 1830, 2259, 2510, 2745, 3765, 4518, 5490, 7530, 11295, 15311, 22590, 30622, 45933, 76555, 91866, 137799, 153110, 229665, 275598, 459330, 688995, 1377990]

約数ペア:

[(1, 1377990), (2, 688995), (3, 459330), (5, 275598), (6, 229665), (9, 153110), (10, 137799), (15, 91866), (18, 76555), (30, 45933), (45, 30622), (61, 22590), (90, 15311), (122, 11295), (183, 7530), (251, 5490), (305, 4518), (366, 3765), (502, 2745), (549, 2510), (610, 2259), (753, 1830), (915, 1506), (1098, 1255)]