78081900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{20021}}^1$

素因数の和:20051

約数の個数: 72

約数和(自身を含む): 243307344

約数和(自身を除く): 165225444

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 20021, 40042, 60063, 80084, 100105, 120126, 200210, 240252, 260273, 300315, 400420, 500525, 520546, 600630, 780819, 1001050, 1041092, 1201260, 1301365, 1501575, 1561638, 2002100, 2602730, 3003150, 3123276, 3904095, 5205460, 6006300, 6506825, 7808190, 13013650, 15616380, 19520475, 26027300, 39040950, 78081900]

約数ペア:

[(1, 78081900), (2, 39040950), (3, 26027300), (4, 19520475), (5, 15616380), (6, 13013650), (10, 7808190), (12, 6506825), (13, 6006300), (15, 5205460), (20, 3904095), (25, 3123276), (26, 3003150), (30, 2602730), (39, 2002100), (50, 1561638), (52, 1501575), (60, 1301365), (65, 1201260), (75, 1041092), (78, 1001050), (100, 780819), (130, 600630), (150, 520546), (156, 500525), (195, 400420), (260, 300315), (300, 260273), (325, 240252), (390, 200210), (650, 120126), (780, 100105), (975, 80084), (1300, 60063), (1950, 40042), (3900, 20021)]