19985490

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{31723}}^1$

素因数の和:31743

約数の個数: 48

約数和(自身を含む): 59387328

約数和(自身を除く): 39401838

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 31723, 63446, 95169, 158615, 190338, 222061, 285507, 317230, 444122, 475845, 571014, 666183, 951690, 1110305, 1332366, 1427535, 1998549, 2220610, 2855070, 3330915, 3997098, 6661830, 9992745, 19985490]

約数ペア:

[(1, 19985490), (2, 9992745), (3, 6661830), (5, 3997098), (6, 3330915), (7, 2855070), (9, 2220610), (10, 1998549), (14, 1427535), (15, 1332366), (18, 1110305), (21, 951690), (30, 666183), (35, 571014), (42, 475845), (45, 444122), (63, 317230), (70, 285507), (90, 222061), (105, 190338), (126, 158615), (210, 95169), (315, 63446), (630, 31723)]