1668996860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{271}}^1\times {\mathrm{853}}^1$

素因数の和:1171

約数の個数: 72

約数和(自身を含む): 3717072576

約数和(自身を除く): 2048075716

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 271, 361, 380, 542, 722, 853, 1084, 1355, 1444, 1706, 1805, 2710, 3412, 3610, 4265, 5149, 5420, 7220, 8530, 10298, 16207, 17060, 20596, 25745, 32414, 51490, 64828, 81035, 97831, 102980, 162070, 195662, 231163, 307933, 324140, 391324, 462326, 489155, 615866, 924652, 978310, 1155815, 1231732, 1539665, 1956620, 2311630, 3079330, 4392097, 4623260, 6158660, 8784194, 17568388, 21960485, 43920970, 83449843, 87841940, 166899686, 333799372, 417249215, 834498430, 1668996860]

約数ペア:

[(1, 1668996860), (2, 834498430), (4, 417249215), (5, 333799372), (10, 166899686), (19, 87841940), (20, 83449843), (38, 43920970), (76, 21960485), (95, 17568388), (190, 8784194), (271, 6158660), (361, 4623260), (380, 4392097), (542, 3079330), (722, 2311630), (853, 1956620), (1084, 1539665), (1355, 1231732), (1444, 1155815), (1706, 978310), (1805, 924652), (2710, 615866), (3412, 489155), (3610, 462326), (4265, 391324), (5149, 324140), (5420, 307933), (7220, 231163), (8530, 195662), (10298, 162070), (16207, 102980), (17060, 97831), (20596, 81035), (25745, 64828), (32414, 51490)]