19728585

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 38217816

約数和(自身を除く): 18489231

約数列:

[1, 3, 5, 9, 15, 17, 37, 41, 45, 51, 85, 111, 123, 153, 185, 205, 255, 289, 333, 369, 555, 615, 629, 697, 765, 867, 1445, 1517, 1665, 1845, 1887, 2091, 2601, 3145, 3485, 4335, 4551, 5661, 6273, 7585, 9435, 10455, 10693, 11849, 13005, 13653, 22755, 25789, 28305, 31365, 32079, 35547, 53465, 59245, 68265, 77367, 96237, 106641, 128945, 160395, 177735, 232101, 386835, 438413, 481185, 533205, 1160505, 1315239, 2192065, 3945717, 6576195, 19728585]

約数ペア:

[(1, 19728585), (3, 6576195), (5, 3945717), (9, 2192065), (15, 1315239), (17, 1160505), (37, 533205), (41, 481185), (45, 438413), (51, 386835), (85, 232101), (111, 177735), (123, 160395), (153, 128945), (185, 106641), (205, 96237), (255, 77367), (289, 68265), (333, 59245), (369, 53465), (555, 35547), (615, 32079), (629, 31365), (697, 28305), (765, 25789), (867, 22755), (1445, 13653), (1517, 13005), (1665, 11849), (1845, 10693), (1887, 10455), (2091, 9435), (2601, 7585), (3145, 6273), (3485, 5661), (4335, 4551)]