21105540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3169}}^1$

素因数の和:3221

約数の個数: 72

約数和(自身を含む): 65771160

約数和(自身を除く): 44665620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3169, 3330, 6338, 6660, 9507, 12676, 15845, 19014, 28521, 31690, 38028, 47535, 57042, 63380, 95070, 114084, 117253, 142605, 190140, 234506, 285210, 351759, 469012, 570420, 586265, 703518, 1055277, 1172530, 1407036, 1758795, 2110554, 2345060, 3517590, 4221108, 5276385, 7035180, 10552770, 21105540]

約数ペア:

[(1, 21105540), (2, 10552770), (3, 7035180), (4, 5276385), (5, 4221108), (6, 3517590), (9, 2345060), (10, 2110554), (12, 1758795), (15, 1407036), (18, 1172530), (20, 1055277), (30, 703518), (36, 586265), (37, 570420), (45, 469012), (60, 351759), (74, 285210), (90, 234506), (111, 190140), (148, 142605), (180, 117253), (185, 114084), (222, 95070), (333, 63380), (370, 57042), (444, 47535), (555, 38028), (666, 31690), (740, 28521), (1110, 19014), (1332, 15845), (1665, 12676), (2220, 9507), (3169, 6660), (3330, 6338)]