21089640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1229}}^1$

素因数の和:1267

約数の個数: 128

約数和(自身を含む): 74390400

約数和(自身を除く): 53300760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 30, 33, 39, 40, 44, 52, 55, 60, 65, 66, 78, 88, 104, 110, 120, 130, 132, 143, 156, 165, 195, 220, 260, 264, 286, 312, 330, 390, 429, 440, 520, 572, 660, 715, 780, 858, 1144, 1229, 1320, 1430, 1560, 1716, 2145, 2458, 2860, 3432, 3687, 4290, 4916, 5720, 6145, 7374, 8580, 9832, 12290, 13519, 14748, 15977, 17160, 18435, 24580, 27038, 29496, 31954, 36870, 40557, 47931, 49160, 54076, 63908, 67595, 73740, 79885, 81114, 95862, 108152, 127816, 135190, 147480, 159770, 162228, 175747, 191724, 202785, 239655, 270380, 319540, 324456, 351494, 383448, 405570, 479310, 527241, 540760, 639080, 702988, 811140, 878735, 958620, 1054482, 1405976, 1622280, 1757470, 1917240, 2108964, 2636205, 3514940, 4217928, 5272410, 7029880, 10544820, 21089640]

約数ペア:

[(1, 21089640), (2, 10544820), (3, 7029880), (4, 5272410), (5, 4217928), (6, 3514940), (8, 2636205), (10, 2108964), (11, 1917240), (12, 1757470), (13, 1622280), (15, 1405976), (20, 1054482), (22, 958620), (24, 878735), (26, 811140), (30, 702988), (33, 639080), (39, 540760), (40, 527241), (44, 479310), (52, 405570), (55, 383448), (60, 351494), (65, 324456), (66, 319540), (78, 270380), (88, 239655), (104, 202785), (110, 191724), (120, 175747), (130, 162228), (132, 159770), (143, 147480), (156, 135190), (165, 127816), (195, 108152), (220, 95862), (260, 81114), (264, 79885), (286, 73740), (312, 67595), (330, 63908), (390, 54076), (429, 49160), (440, 47931), (520, 40557), (572, 36870), (660, 31954), (715, 29496), (780, 27038), (858, 24580), (1144, 18435), (1229, 17160), (1320, 15977), (1430, 14748), (1560, 13519), (1716, 12290), (2145, 9832), (2458, 8580), (2860, 7374), (3432, 6145), (3687, 5720), (4290, 4916)]