21590920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41521}}^1$

素因数の和:41545

約数の個数: 32

約数和(自身を含む): 52317720

約数和(自身を除く): 30726800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41521, 83042, 166084, 207605, 332168, 415210, 539773, 830420, 1079546, 1660840, 2159092, 2698865, 4318184, 5397730, 10795460, 21590920]

約数ペア:

[(1, 21590920), (2, 10795460), (4, 5397730), (5, 4318184), (8, 2698865), (10, 2159092), (13, 1660840), (20, 1079546), (26, 830420), (40, 539773), (52, 415210), (65, 332168), (104, 207605), (130, 166084), (260, 83042), (520, 41521)]