21379140

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:160

約数の個数: 144

約数和(自身を含む): 69346368

約数和(自身を除く): 47967228

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 53, 54, 60, 81, 83, 90, 106, 108, 135, 159, 162, 166, 180, 212, 243, 249, 265, 270, 318, 324, 332, 405, 415, 477, 486, 498, 530, 540, 636, 747, 795, 810, 830, 954, 972, 996, 1060, 1215, 1245, 1431, 1494, 1590, 1620, 1660, 1908, 2241, 2385, 2430, 2490, 2862, 2988, 3180, 3735, 4293, 4399, 4482, 4770, 4860, 4980, 5724, 6723, 7155, 7470, 8586, 8798, 8964, 9540, 11205, 12879, 13197, 13446, 14310, 14940, 17172, 17596, 20169, 21465, 21995, 22410, 25758, 26394, 26892, 28620, 33615, 39591, 40338, 42930, 43990, 44820, 51516, 52788, 64395, 65985, 67230, 79182, 80676, 85860, 87980, 100845, 118773, 128790, 131970, 134460, 158364, 197955, 201690, 237546, 257580, 263940, 356319, 395910, 403380, 475092, 593865, 712638, 791820, 1068957, 1187730, 1425276, 1781595, 2137914, 2375460, 3563190, 4275828, 5344785, 7126380, 10689570, 21379140]

約数ペア:

[(1, 21379140), (2, 10689570), (3, 7126380), (4, 5344785), (5, 4275828), (6, 3563190), (9, 2375460), (10, 2137914), (12, 1781595), (15, 1425276), (18, 1187730), (20, 1068957), (27, 791820), (30, 712638), (36, 593865), (45, 475092), (53, 403380), (54, 395910), (60, 356319), (81, 263940), (83, 257580), (90, 237546), (106, 201690), (108, 197955), (135, 158364), (159, 134460), (162, 131970), (166, 128790), (180, 118773), (212, 100845), (243, 87980), (249, 85860), (265, 80676), (270, 79182), (318, 67230), (324, 65985), (332, 64395), (405, 52788), (415, 51516), (477, 44820), (486, 43990), (498, 42930), (530, 40338), (540, 39591), (636, 33615), (747, 28620), (795, 26892), (810, 26394), (830, 25758), (954, 22410), (972, 21995), (996, 21465), (1060, 20169), (1215, 17596), (1245, 17172), (1431, 14940), (1494, 14310), (1590, 13446), (1620, 13197), (1660, 12879), (1908, 11205), (2241, 9540), (2385, 8964), (2430, 8798), (2490, 8586), (2862, 7470), (2988, 7155), (3180, 6723), (3735, 5724), (4293, 4980), (4399, 4860), (4482, 4770)]