28357420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15581}}^1$

素因数の和:15610

約数の個数: 48

約数和(自身を含む): 73297728

約数和(自身を除く): 44940308

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 15581, 31162, 62324, 77905, 109067, 155810, 202553, 218134, 311620, 405106, 436268, 545335, 810212, 1012765, 1090670, 1417871, 2025530, 2181340, 2835742, 4051060, 5671484, 7089355, 14178710, 28357420]

約数ペア:

[(1, 28357420), (2, 14178710), (4, 7089355), (5, 5671484), (7, 4051060), (10, 2835742), (13, 2181340), (14, 2025530), (20, 1417871), (26, 1090670), (28, 1012765), (35, 810212), (52, 545335), (65, 436268), (70, 405106), (91, 311620), (130, 218134), (140, 202553), (182, 155810), (260, 109067), (364, 77905), (455, 62324), (910, 31162), (1820, 15581)]