20197565180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{161503}}^1$

素因数の和:161575

約数の個数: 72

約数和(自身を含む): 47170150272

約数和(自身を除く): 26972585092

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 169, 185, 260, 338, 370, 481, 676, 740, 845, 962, 1690, 1924, 2405, 3380, 4810, 6253, 9620, 12506, 25012, 31265, 62530, 125060, 161503, 323006, 646012, 807515, 1615030, 2099539, 3230060, 4199078, 5975611, 8398156, 10497695, 11951222, 20995390, 23902444, 27294007, 29878055, 41990780, 54588014, 59756110, 77682943, 109176028, 119512220, 136470035, 155365886, 272940070, 310731772, 388414715, 545880140, 776829430, 1009878259, 1553658860, 2019756518, 4039513036, 5049391295, 10098782590, 20197565180]

約数ペア:

[(1, 20197565180), (2, 10098782590), (4, 5049391295), (5, 4039513036), (10, 2019756518), (13, 1553658860), (20, 1009878259), (26, 776829430), (37, 545880140), (52, 388414715), (65, 310731772), (74, 272940070), (130, 155365886), (148, 136470035), (169, 119512220), (185, 109176028), (260, 77682943), (338, 59756110), (370, 54588014), (481, 41990780), (676, 29878055), (740, 27294007), (845, 23902444), (962, 20995390), (1690, 11951222), (1924, 10497695), (2405, 8398156), (3380, 5975611), (4810, 4199078), (6253, 3230060), (9620, 2099539), (12506, 1615030), (25012, 807515), (31265, 646012), (62530, 323006), (125060, 161503)]