28700366920

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{439381}}^1$

素因数の和:439486

約数の個数: 64

約数和(自身を含む): 68332688640

約数和(自身を除く): 39632321720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 71, 92, 115, 142, 184, 230, 284, 355, 460, 568, 710, 920, 1420, 1633, 2840, 3266, 6532, 8165, 13064, 16330, 32660, 65320, 439381, 878762, 1757524, 2196905, 3515048, 4393810, 8787620, 10105763, 17575240, 20211526, 31196051, 40423052, 50528815, 62392102, 80846104, 101057630, 124784204, 155980255, 202115260, 249568408, 311960510, 404230520, 623921020, 717509173, 1247842040, 1435018346, 2870036692, 3587545865, 5740073384, 7175091730, 14350183460, 28700366920]

約数ペア:

[(1, 28700366920), (2, 14350183460), (4, 7175091730), (5, 5740073384), (8, 3587545865), (10, 2870036692), (20, 1435018346), (23, 1247842040), (40, 717509173), (46, 623921020), (71, 404230520), (92, 311960510), (115, 249568408), (142, 202115260), (184, 155980255), (230, 124784204), (284, 101057630), (355, 80846104), (460, 62392102), (568, 50528815), (710, 40423052), (920, 31196051), (1420, 20211526), (1633, 17575240), (2840, 10105763), (3266, 8787620), (6532, 4393810), (8165, 3515048), (13064, 2196905), (16330, 1757524), (32660, 878762), (65320, 439381)]