28440825

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 55978560

約数和(自身を除く): 27537735

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 71, 75, 105, 109, 147, 175, 213, 245, 327, 355, 497, 525, 545, 735, 763, 1065, 1225, 1491, 1635, 1775, 2289, 2485, 2725, 3479, 3675, 3815, 5325, 5341, 7455, 7739, 8175, 10437, 11445, 12425, 16023, 17395, 19075, 23217, 26705, 37275, 38695, 52185, 54173, 57225, 80115, 86975, 116085, 133525, 162519, 193475, 260925, 270865, 379211, 400575, 580425, 812595, 1137633, 1354325, 1896055, 4062975, 5688165, 9480275, 28440825]

約数ペア:

[(1, 28440825), (3, 9480275), (5, 5688165), (7, 4062975), (15, 1896055), (21, 1354325), (25, 1137633), (35, 812595), (49, 580425), (71, 400575), (75, 379211), (105, 270865), (109, 260925), (147, 193475), (175, 162519), (213, 133525), (245, 116085), (327, 86975), (355, 80115), (497, 57225), (525, 54173), (545, 52185), (735, 38695), (763, 37275), (1065, 26705), (1225, 23217), (1491, 19075), (1635, 17395), (1775, 16023), (2289, 12425), (2485, 11445), (2725, 10437), (3479, 8175), (3675, 7739), (3815, 7455), (5325, 5341)]