20914400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2011}}^1$

素因数の和:2044

約数の個数: 72

約数和(自身を含む): 55012104

約数和(自身を除く): 34097704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 80, 100, 104, 130, 160, 200, 208, 260, 325, 400, 416, 520, 650, 800, 1040, 1300, 2011, 2080, 2600, 4022, 5200, 8044, 10055, 10400, 16088, 20110, 26143, 32176, 40220, 50275, 52286, 64352, 80440, 100550, 104572, 130715, 160880, 201100, 209144, 261430, 321760, 402200, 418288, 522860, 653575, 804400, 836576, 1045720, 1307150, 1608800, 2091440, 2614300, 4182880, 5228600, 10457200, 20914400]

約数ペア:

[(1, 20914400), (2, 10457200), (4, 5228600), (5, 4182880), (8, 2614300), (10, 2091440), (13, 1608800), (16, 1307150), (20, 1045720), (25, 836576), (26, 804400), (32, 653575), (40, 522860), (50, 418288), (52, 402200), (65, 321760), (80, 261430), (100, 209144), (104, 201100), (130, 160880), (160, 130715), (200, 104572), (208, 100550), (260, 80440), (325, 64352), (400, 52286), (416, 50275), (520, 40220), (650, 32176), (800, 26143), (1040, 20110), (1300, 16088), (2011, 10400), (2080, 10055), (2600, 8044), (4022, 5200)]