20419320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{647}}^1$

素因数の和:924

約数の個数: 64

約数和(自身を含む): 61585920

約数和(自身を除く): 41166600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 263, 526, 647, 789, 1052, 1294, 1315, 1578, 1941, 2104, 2588, 2630, 3156, 3235, 3882, 3945, 5176, 5260, 6312, 6470, 7764, 7890, 9705, 10520, 12940, 15528, 15780, 19410, 25880, 31560, 38820, 77640, 170161, 340322, 510483, 680644, 850805, 1020966, 1361288, 1701610, 2041932, 2552415, 3403220, 4083864, 5104830, 6806440, 10209660, 20419320]

約数ペア:

[(1, 20419320), (2, 10209660), (3, 6806440), (4, 5104830), (5, 4083864), (6, 3403220), (8, 2552415), (10, 2041932), (12, 1701610), (15, 1361288), (20, 1020966), (24, 850805), (30, 680644), (40, 510483), (60, 340322), (120, 170161), (263, 77640), (526, 38820), (647, 31560), (789, 25880), (1052, 19410), (1294, 15780), (1315, 15528), (1578, 12940), (1941, 10520), (2104, 9705), (2588, 7890), (2630, 7764), (3156, 6470), (3235, 6312), (3882, 5260), (3945, 5176)]