1902180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{647}}^1$

素因数の和:673

約数の個数: 72

約数和(自身を含む): 6205248

約数和(自身を除く): 4303068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 647, 735, 980, 1294, 1470, 1941, 2588, 2940, 3235, 3882, 4529, 6470, 7764, 9058, 9705, 12940, 13587, 18116, 19410, 22645, 27174, 31703, 38820, 45290, 54348, 63406, 67935, 90580, 95109, 126812, 135870, 158515, 190218, 271740, 317030, 380436, 475545, 634060, 951090, 1902180]

約数ペア:

[(1, 1902180), (2, 951090), (3, 634060), (4, 475545), (5, 380436), (6, 317030), (7, 271740), (10, 190218), (12, 158515), (14, 135870), (15, 126812), (20, 95109), (21, 90580), (28, 67935), (30, 63406), (35, 54348), (42, 45290), (49, 38820), (60, 31703), (70, 27174), (84, 22645), (98, 19410), (105, 18116), (140, 13587), (147, 12940), (196, 9705), (210, 9058), (245, 7764), (294, 6470), (420, 4529), (490, 3882), (588, 3235), (647, 2940), (735, 2588), (980, 1941), (1294, 1470)]