20920380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26821}}^1$

素因数の和:26846

約数の個数: 48

約数和(自身を含む): 63085344

約数和(自身を除く): 42164964

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26821, 53642, 80463, 107284, 134105, 160926, 268210, 321852, 348673, 402315, 536420, 697346, 804630, 1046019, 1394692, 1609260, 1743365, 2092038, 3486730, 4184076, 5230095, 6973460, 10460190, 20920380]

約数ペア:

[(1, 20920380), (2, 10460190), (3, 6973460), (4, 5230095), (5, 4184076), (6, 3486730), (10, 2092038), (12, 1743365), (13, 1609260), (15, 1394692), (20, 1046019), (26, 804630), (30, 697346), (39, 536420), (52, 402315), (60, 348673), (65, 321852), (78, 268210), (130, 160926), (156, 134105), (195, 107284), (260, 80463), (390, 53642), (780, 26821)]