21973978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:382

約数の個数: 32

約数和(自身を含む): 37094400

約数和(自身を除く): 15120422

約数列:

[1, 2, 13, 26, 31, 62, 137, 199, 274, 398, 403, 806, 1781, 2587, 3562, 4247, 5174, 6169, 8494, 12338, 27263, 54526, 55211, 80197, 110422, 160394, 354419, 708838, 845153, 1690306, 10986989, 21973978]

約数ペア:

[(1, 21973978), (2, 10986989), (13, 1690306), (26, 845153), (31, 708838), (62, 354419), (137, 160394), (199, 110422), (274, 80197), (398, 55211), (403, 54526), (806, 27263), (1781, 12338), (2587, 8494), (3562, 6169), (4247, 5174)]