21259966

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{587}}^1$

素因数の和:808

約数の個数: 32

約数和(自身を含む): 39513600

約数和(自身を除く): 18253634

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 199, 398, 587, 1174, 1393, 2587, 2786, 4109, 5174, 7631, 8218, 15262, 18109, 36218, 53417, 106834, 116813, 233626, 817691, 1518569, 1635382, 3037138, 10629983, 21259966]

約数ペア:

[(1, 21259966), (2, 10629983), (7, 3037138), (13, 1635382), (14, 1518569), (26, 817691), (91, 233626), (182, 116813), (199, 106834), (398, 53417), (587, 36218), (1174, 18109), (1393, 15262), (2587, 8218), (2786, 7631), (4109, 5174)]