20178900

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{3203}}^1$

素因数の和:3230

約数の個数: 108

約数和(自身を含む): 72307872

約数和(自身を除く): 52128972

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 50, 60, 63, 70, 75, 84, 90, 100, 105, 126, 140, 150, 175, 180, 210, 225, 252, 300, 315, 350, 420, 450, 525, 630, 700, 900, 1050, 1260, 1575, 2100, 3150, 3203, 6300, 6406, 9609, 12812, 16015, 19218, 22421, 28827, 32030, 38436, 44842, 48045, 57654, 64060, 67263, 80075, 89684, 96090, 112105, 115308, 134526, 144135, 160150, 192180, 201789, 224210, 240225, 269052, 288270, 320300, 336315, 403578, 448420, 480450, 560525, 576540, 672630, 720675, 807156, 960900, 1008945, 1121050, 1345260, 1441350, 1681575, 2017890, 2242100, 2882700, 3363150, 4035780, 5044725, 6726300, 10089450, 20178900]

約数ペア:

[(1, 20178900), (2, 10089450), (3, 6726300), (4, 5044725), (5, 4035780), (6, 3363150), (7, 2882700), (9, 2242100), (10, 2017890), (12, 1681575), (14, 1441350), (15, 1345260), (18, 1121050), (20, 1008945), (21, 960900), (25, 807156), (28, 720675), (30, 672630), (35, 576540), (36, 560525), (42, 480450), (45, 448420), (50, 403578), (60, 336315), (63, 320300), (70, 288270), (75, 269052), (84, 240225), (90, 224210), (100, 201789), (105, 192180), (126, 160150), (140, 144135), (150, 134526), (175, 115308), (180, 112105), (210, 96090), (225, 89684), (252, 80075), (300, 67263), (315, 64060), (350, 57654), (420, 48045), (450, 44842), (525, 38436), (630, 32030), (700, 28827), (900, 22421), (1050, 19218), (1260, 16015), (1575, 12812), (2100, 9609), (3150, 6406), (3203, 6300)]