201988780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{2609}}^1$

素因数の和:2711

約数の個数: 72

約数和(自身を含む): 499867200

約数和(自身を除く): 297878420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 158, 196, 245, 316, 395, 490, 553, 790, 980, 1106, 1580, 2212, 2609, 2765, 3871, 5218, 5530, 7742, 10436, 11060, 13045, 15484, 18263, 19355, 26090, 36526, 38710, 52180, 73052, 77420, 91315, 127841, 182630, 206111, 255682, 365260, 412222, 511364, 639205, 824444, 1030555, 1278410, 1442777, 2061110, 2556820, 2885554, 4122220, 5771108, 7213885, 10099439, 14427770, 20198878, 28855540, 40397756, 50497195, 100994390, 201988780]

約数ペア:

[(1, 201988780), (2, 100994390), (4, 50497195), (5, 40397756), (7, 28855540), (10, 20198878), (14, 14427770), (20, 10099439), (28, 7213885), (35, 5771108), (49, 4122220), (70, 2885554), (79, 2556820), (98, 2061110), (140, 1442777), (158, 1278410), (196, 1030555), (245, 824444), (316, 639205), (395, 511364), (490, 412222), (553, 365260), (790, 255682), (980, 206111), (1106, 182630), (1580, 127841), (2212, 91315), (2609, 77420), (2765, 73052), (3871, 52180), (5218, 38710), (5530, 36526), (7742, 26090), (10436, 19355), (11060, 18263), (13045, 15484)]