40638390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1319}}^1$

素因数の和:1421

約数の個数: 64

約数和(自身を含む): 106444800

約数和(自身を除く): 65806410

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 79, 130, 158, 195, 237, 390, 395, 474, 790, 1027, 1185, 1319, 2054, 2370, 2638, 3081, 3957, 5135, 6162, 6595, 7914, 10270, 13190, 15405, 17147, 19785, 30810, 34294, 39570, 51441, 85735, 102882, 104201, 171470, 208402, 257205, 312603, 514410, 521005, 625206, 1042010, 1354613, 1563015, 2709226, 3126030, 4063839, 6773065, 8127678, 13546130, 20319195, 40638390]

約数ペア:

[(1, 40638390), (2, 20319195), (3, 13546130), (5, 8127678), (6, 6773065), (10, 4063839), (13, 3126030), (15, 2709226), (26, 1563015), (30, 1354613), (39, 1042010), (65, 625206), (78, 521005), (79, 514410), (130, 312603), (158, 257205), (195, 208402), (237, 171470), (390, 104201), (395, 102882), (474, 85735), (790, 51441), (1027, 39570), (1185, 34294), (1319, 30810), (2054, 19785), (2370, 17147), (2638, 15405), (3081, 13190), (3957, 10270), (5135, 7914), (6162, 6595)]