18875740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3821}}^1$

素因数の和:3862

約数の個数: 48

約数和(自身を含む): 44946720

約数和(自身を除く): 26070980

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 3821, 4940, 7642, 15284, 19105, 38210, 49673, 72599, 76420, 99346, 145198, 198692, 248365, 290396, 362995, 496730, 725990, 943787, 993460, 1451980, 1887574, 3775148, 4718935, 9437870, 18875740]

約数ペア:

[(1, 18875740), (2, 9437870), (4, 4718935), (5, 3775148), (10, 1887574), (13, 1451980), (19, 993460), (20, 943787), (26, 725990), (38, 496730), (52, 362995), (65, 290396), (76, 248365), (95, 198692), (130, 145198), (190, 99346), (247, 76420), (260, 72599), (380, 49673), (494, 38210), (988, 19105), (1235, 15284), (2470, 7642), (3821, 4940)]