19957770

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:500

約数の個数: 96

約数和(自身を含む): 60203520

約数和(自身を除く): 40245750

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 79, 90, 105, 126, 158, 210, 237, 315, 395, 401, 474, 553, 630, 711, 790, 802, 1106, 1185, 1203, 1422, 1659, 2005, 2370, 2406, 2765, 2807, 3318, 3555, 3609, 4010, 4977, 5530, 5614, 6015, 7110, 7218, 8295, 8421, 9954, 12030, 14035, 16590, 16842, 18045, 24885, 25263, 28070, 31679, 36090, 42105, 49770, 50526, 63358, 84210, 95037, 126315, 158395, 190074, 221753, 252630, 285111, 316790, 443506, 475185, 570222, 665259, 950370, 1108765, 1330518, 1425555, 1995777, 2217530, 2851110, 3326295, 3991554, 6652590, 9978885, 19957770]

約数ペア:

[(1, 19957770), (2, 9978885), (3, 6652590), (5, 3991554), (6, 3326295), (7, 2851110), (9, 2217530), (10, 1995777), (14, 1425555), (15, 1330518), (18, 1108765), (21, 950370), (30, 665259), (35, 570222), (42, 475185), (45, 443506), (63, 316790), (70, 285111), (79, 252630), (90, 221753), (105, 190074), (126, 158395), (158, 126315), (210, 95037), (237, 84210), (315, 63358), (395, 50526), (401, 49770), (474, 42105), (553, 36090), (630, 31679), (711, 28070), (790, 25263), (802, 24885), (1106, 18045), (1185, 16842), (1203, 16590), (1422, 14035), (1659, 12030), (2005, 9954), (2370, 8421), (2406, 8295), (2765, 7218), (2807, 7110), (3318, 6015), (3555, 5614), (3609, 5530), (4010, 4977)]