278320380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{356821}}^1$

素因数の和:356846

約数の個数: 48

約数和(自身を含む): 839245344

約数和(自身を除く): 560924964

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, 356821, 713642, 1070463, 1427284, 1784105, 2140926, 3568210, 4281852, 4638673, 5352315, 7136420, 9277346, 10704630, 13916019, 18554692, 21409260, 23193365, 27832038, 46386730, 55664076, 69580095, 92773460, 139160190, 278320380]

約数ペア:

[(1, 278320380), (2, 139160190), (3, 92773460), (4, 69580095), (5, 55664076), (6, 46386730), (10, 27832038), (12, 23193365), (13, 21409260), (15, 18554692), (20, 13916019), (26, 10704630), (30, 9277346), (39, 7136420), (52, 5352315), (60, 4638673), (65, 4281852), (78, 3568210), (130, 2140926), (156, 1784105), (195, 1427284), (260, 1070463), (390, 713642), (780, 356821)]