18818930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{401}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 38596824

約数和(自身を除く): 19777894

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 361, 401, 494, 722, 802, 1235, 1805, 2005, 2470, 3610, 4010, 4693, 5213, 7619, 9386, 10426, 15238, 23465, 26065, 38095, 46930, 52130, 76190, 99047, 144761, 198094, 289522, 495235, 723805, 990470, 1447610, 1881893, 3763786, 9409465, 18818930]

約数ペア:

[(1, 18818930), (2, 9409465), (5, 3763786), (10, 1881893), (13, 1447610), (19, 990470), (26, 723805), (38, 495235), (65, 289522), (95, 198094), (130, 144761), (190, 99047), (247, 76190), (361, 52130), (401, 46930), (494, 38095), (722, 26065), (802, 23465), (1235, 15238), (1805, 10426), (2005, 9386), (2470, 7619), (3610, 5213), (4010, 4693)]