20320872

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:255

約数の個数: 128

約数和(自身を含む): 61931520

約数和(自身を除く): 41610648

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 13, 22, 24, 26, 31, 33, 39, 44, 52, 62, 66, 78, 88, 93, 104, 124, 132, 143, 156, 186, 191, 248, 264, 286, 312, 341, 372, 382, 403, 429, 572, 573, 682, 744, 764, 806, 858, 1023, 1144, 1146, 1209, 1364, 1528, 1612, 1716, 2046, 2101, 2292, 2418, 2483, 2728, 3224, 3432, 4092, 4202, 4433, 4584, 4836, 4966, 5921, 6303, 7449, 8184, 8404, 8866, 9672, 9932, 11842, 12606, 13299, 14898, 16808, 17732, 17763, 19864, 23684, 25212, 26598, 27313, 29796, 35464, 35526, 47368, 50424, 53196, 54626, 59592, 65131, 71052, 76973, 81939, 106392, 109252, 130262, 142104, 153946, 163878, 195393, 218504, 230919, 260524, 307892, 327756, 390786, 461838, 521048, 615784, 655512, 781572, 846703, 923676, 1563144, 1693406, 1847352, 2540109, 3386812, 5080218, 6773624, 10160436, 20320872]

約数ペア:

[(1, 20320872), (2, 10160436), (3, 6773624), (4, 5080218), (6, 3386812), (8, 2540109), (11, 1847352), (12, 1693406), (13, 1563144), (22, 923676), (24, 846703), (26, 781572), (31, 655512), (33, 615784), (39, 521048), (44, 461838), (52, 390786), (62, 327756), (66, 307892), (78, 260524), (88, 230919), (93, 218504), (104, 195393), (124, 163878), (132, 153946), (143, 142104), (156, 130262), (186, 109252), (191, 106392), (248, 81939), (264, 76973), (286, 71052), (312, 65131), (341, 59592), (372, 54626), (382, 53196), (403, 50424), (429, 47368), (572, 35526), (573, 35464), (682, 29796), (744, 27313), (764, 26598), (806, 25212), (858, 23684), (1023, 19864), (1144, 17763), (1146, 17732), (1209, 16808), (1364, 14898), (1528, 13299), (1612, 12606), (1716, 11842), (2046, 9932), (2101, 9672), (2292, 8866), (2418, 8404), (2483, 8184), (2728, 7449), (3224, 6303), (3432, 5921), (4092, 4966), (4202, 4836), (4433, 4584)]