1555014020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{421}}^1\times {\mathrm{3769}}^1$

素因数の和:4213

約数の個数: 72

約数和(自身を含む): 3808710360

約数和(自身を除く): 2253696340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 421, 490, 842, 980, 1684, 2105, 2947, 3769, 4210, 5894, 7538, 8420, 11788, 14735, 15076, 18845, 20629, 26383, 29470, 37690, 41258, 52766, 58940, 75380, 82516, 103145, 105532, 131915, 184681, 206290, 263830, 369362, 412580, 527660, 738724, 923405, 1586749, 1846810, 3173498, 3693620, 6346996, 7933745, 11107243, 15867490, 22214486, 31734980, 44428972, 55536215, 77750701, 111072430, 155501402, 222144860, 311002804, 388753505, 777507010, 1555014020]

約数ペア:

[(1, 1555014020), (2, 777507010), (4, 388753505), (5, 311002804), (7, 222144860), (10, 155501402), (14, 111072430), (20, 77750701), (28, 55536215), (35, 44428972), (49, 31734980), (70, 22214486), (98, 15867490), (140, 11107243), (196, 7933745), (245, 6346996), (421, 3693620), (490, 3173498), (842, 1846810), (980, 1586749), (1684, 923405), (2105, 738724), (2947, 527660), (3769, 412580), (4210, 369362), (5894, 263830), (7538, 206290), (8420, 184681), (11788, 131915), (14735, 105532), (15076, 103145), (18845, 82516), (20629, 75380), (26383, 58940), (29470, 52766), (37690, 41258)]