19689560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{613}}^1$

素因数の和:708

約数の個数: 64

約数和(自身を含む): 49070880

約数和(自身を除く): 29381320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 613, 730, 803, 1226, 1460, 1606, 2452, 2920, 3065, 3212, 4015, 4904, 6130, 6424, 6743, 8030, 12260, 13486, 16060, 24520, 26972, 32120, 33715, 44749, 53944, 67430, 89498, 134860, 178996, 223745, 269720, 357992, 447490, 492239, 894980, 984478, 1789960, 1968956, 2461195, 3937912, 4922390, 9844780, 19689560]

約数ペア:

[(1, 19689560), (2, 9844780), (4, 4922390), (5, 3937912), (8, 2461195), (10, 1968956), (11, 1789960), (20, 984478), (22, 894980), (40, 492239), (44, 447490), (55, 357992), (73, 269720), (88, 223745), (110, 178996), (146, 134860), (220, 89498), (292, 67430), (365, 53944), (440, 44749), (584, 33715), (613, 32120), (730, 26972), (803, 24520), (1226, 16060), (1460, 13486), (1606, 12260), (2452, 8030), (2920, 6743), (3065, 6424), (3212, 6130), (4015, 4904)]