722156760868

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^2\times {\mathrm{1321}}^1$

素因数の和:2205

約数の個数: 72

約数和(自身を含む): 1365595012320

約数和(自身を除く): 643438251452

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 172, 409, 817, 818, 1321, 1634, 1636, 2642, 3268, 5284, 7771, 15542, 17587, 25099, 31084, 35174, 50198, 56803, 70348, 100396, 113606, 167281, 227212, 334153, 334562, 540289, 668306, 669124, 1079257, 1080578, 1336612, 2158514, 2161156, 3178339, 4317028, 6356678, 7193083, 10265491, 12713356, 14386166, 20530982, 23232427, 28772332, 41061964, 46464854, 92929708, 136668577, 220978201, 273337154, 441416113, 441956402, 546674308, 882832226, 883912804, 1765664452, 4198585819, 8397171638, 9502062643, 16794343276, 19004125286, 38008250572, 180539190217, 361078380434, 722156760868]

約数ペア:

[(1, 722156760868), (2, 361078380434), (4, 180539190217), (19, 38008250572), (38, 19004125286), (43, 16794343276), (76, 9502062643), (86, 8397171638), (172, 4198585819), (409, 1765664452), (817, 883912804), (818, 882832226), (1321, 546674308), (1634, 441956402), (1636, 441416113), (2642, 273337154), (3268, 220978201), (5284, 136668577), (7771, 92929708), (15542, 46464854), (17587, 41061964), (25099, 28772332), (31084, 23232427), (35174, 20530982), (50198, 14386166), (56803, 12713356), (70348, 10265491), (100396, 7193083), (113606, 6356678), (167281, 4317028), (227212, 3178339), (334153, 2161156), (334562, 2158514), (540289, 1336612), (668306, 1080578), (669124, 1079257)]