390886780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:535

約数の個数: 96

約数和(自身を含む): 904442112

約数和(自身を除く): 513555332

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 47, 61, 68, 85, 94, 122, 170, 188, 235, 244, 305, 340, 401, 470, 610, 799, 802, 940, 1037, 1220, 1598, 1604, 2005, 2074, 2867, 3196, 3995, 4010, 4148, 5185, 5734, 6817, 7990, 8020, 10370, 11468, 13634, 14335, 15980, 18847, 20740, 24461, 27268, 28670, 34085, 37694, 48739, 48922, 57340, 68170, 75388, 94235, 97478, 97844, 122305, 136340, 188470, 194956, 243695, 244610, 320399, 376940, 415837, 487390, 489220, 640798, 831674, 974780, 1149667, 1281596, 1601995, 1663348, 2079185, 2299334, 3203990, 4158370, 4598668, 5748335, 6407980, 8316740, 11496670, 19544339, 22993340, 39088678, 78177356, 97721695, 195443390, 390886780]

約数ペア:

[(1, 390886780), (2, 195443390), (4, 97721695), (5, 78177356), (10, 39088678), (17, 22993340), (20, 19544339), (34, 11496670), (47, 8316740), (61, 6407980), (68, 5748335), (85, 4598668), (94, 4158370), (122, 3203990), (170, 2299334), (188, 2079185), (235, 1663348), (244, 1601995), (305, 1281596), (340, 1149667), (401, 974780), (470, 831674), (610, 640798), (799, 489220), (802, 487390), (940, 415837), (1037, 376940), (1220, 320399), (1598, 244610), (1604, 243695), (2005, 194956), (2074, 188470), (2867, 136340), (3196, 122305), (3995, 97844), (4010, 97478), (4148, 94235), (5185, 75388), (5734, 68170), (6817, 57340), (7990, 48922), (8020, 48739), (10370, 37694), (11468, 34085), (13634, 28670), (14335, 27268), (15980, 24461), (18847, 20740)]