1855140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{631}}^1$

素因数の和:657

約数の個数: 72

約数和(自身を含む): 6052032

約数和(自身を除く): 4196892

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, 631, 735, 980, 1262, 1470, 1893, 2524, 2940, 3155, 3786, 4417, 6310, 7572, 8834, 9465, 12620, 13251, 17668, 18930, 22085, 26502, 30919, 37860, 44170, 53004, 61838, 66255, 88340, 92757, 123676, 132510, 154595, 185514, 265020, 309190, 371028, 463785, 618380, 927570, 1855140]

約数ペア:

[(1, 1855140), (2, 927570), (3, 618380), (4, 463785), (5, 371028), (6, 309190), (7, 265020), (10, 185514), (12, 154595), (14, 132510), (15, 123676), (20, 92757), (21, 88340), (28, 66255), (30, 61838), (35, 53004), (42, 44170), (49, 37860), (60, 30919), (70, 26502), (84, 22085), (98, 18930), (105, 17668), (140, 13251), (147, 12620), (196, 9465), (210, 8834), (245, 7572), (294, 6310), (420, 4417), (490, 3786), (588, 3155), (631, 2940), (735, 2524), (980, 1893), (1262, 1470)]