21699225

素因数分解:

$3^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:128

約数の個数: 96

約数和(自身を含む): 44282880

約数和(自身を除く): 22583655

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 31, 45, 51, 61, 75, 85, 93, 135, 153, 155, 183, 225, 255, 279, 305, 425, 459, 465, 527, 549, 675, 765, 775, 837, 915, 1037, 1275, 1395, 1525, 1581, 1647, 1891, 2295, 2325, 2635, 2745, 3111, 3825, 4185, 4575, 4743, 5185, 5673, 6975, 7905, 8235, 9333, 9455, 11475, 13175, 13725, 14229, 15555, 17019, 20925, 23715, 25925, 27999, 28365, 32147, 39525, 41175, 46665, 47275, 51057, 71145, 77775, 85095, 96441, 118575, 139995, 141825, 160735, 233325, 255285, 289323, 355725, 425475, 482205, 699975, 803675, 867969, 1276425, 1446615, 2411025, 4339845, 7233075, 21699225]

約数ペア:

[(1, 21699225), (3, 7233075), (5, 4339845), (9, 2411025), (15, 1446615), (17, 1276425), (25, 867969), (27, 803675), (31, 699975), (45, 482205), (51, 425475), (61, 355725), (75, 289323), (85, 255285), (93, 233325), (135, 160735), (153, 141825), (155, 139995), (183, 118575), (225, 96441), (255, 85095), (279, 77775), (305, 71145), (425, 51057), (459, 47275), (465, 46665), (527, 41175), (549, 39525), (675, 32147), (765, 28365), (775, 27999), (837, 25925), (915, 23715), (1037, 20925), (1275, 17019), (1395, 15555), (1525, 14229), (1581, 13725), (1647, 13175), (1891, 11475), (2295, 9455), (2325, 9333), (2635, 8235), (2745, 7905), (3111, 6975), (3825, 5673), (4185, 5185), (4575, 4743)]