19811740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3313}}^1$

素因数の和:3358

約数の個数: 48

約数和(自身を含む): 46767168

約数和(自身を除く): 26955428

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 3313, 5980, 6626, 13252, 16565, 33130, 43069, 66260, 76199, 86138, 152398, 172276, 215345, 304796, 380995, 430690, 761990, 861380, 990587, 1523980, 1981174, 3962348, 4952935, 9905870, 19811740]

約数ペア:

[(1, 19811740), (2, 9905870), (4, 4952935), (5, 3962348), (10, 1981174), (13, 1523980), (20, 990587), (23, 861380), (26, 761990), (46, 430690), (52, 380995), (65, 304796), (92, 215345), (115, 172276), (130, 152398), (230, 86138), (260, 76199), (299, 66260), (460, 43069), (598, 33130), (1196, 16565), (1495, 13252), (2990, 6626), (3313, 5980)]