721890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{617}}^1$

素因数の和:643

約数の個数: 48

約数和(自身を含む): 2024568

約数和(自身を除く): 1302678

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 585, 617, 1170, 1234, 1851, 3085, 3702, 5553, 6170, 8021, 9255, 11106, 16042, 18510, 24063, 27765, 40105, 48126, 55530, 72189, 80210, 120315, 144378, 240630, 360945, 721890]

約数ペア:

[(1, 721890), (2, 360945), (3, 240630), (5, 144378), (6, 120315), (9, 80210), (10, 72189), (13, 55530), (15, 48126), (18, 40105), (26, 27765), (30, 24063), (39, 18510), (45, 16042), (65, 11106), (78, 9255), (90, 8021), (117, 6170), (130, 5553), (195, 3702), (234, 3085), (390, 1851), (585, 1234), (617, 1170)]