21089796

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 64350720

約数和(自身を除く): 43260924

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 31, 39, 42, 49, 52, 62, 78, 84, 89, 91, 93, 98, 124, 147, 156, 178, 182, 186, 196, 217, 267, 273, 294, 356, 364, 372, 403, 434, 534, 546, 588, 623, 637, 651, 806, 868, 1068, 1092, 1157, 1209, 1246, 1274, 1302, 1519, 1612, 1869, 1911, 2314, 2418, 2492, 2548, 2604, 2759, 2821, 3038, 3471, 3738, 3822, 4361, 4557, 4628, 4836, 5518, 5642, 6076, 6942, 7476, 7644, 8099, 8277, 8463, 8722, 9114, 11036, 11284, 13083, 13884, 16198, 16554, 16926, 17444, 18228, 19313, 19747, 24297, 26166, 32396, 33108, 33852, 35867, 38626, 39494, 48594, 52332, 56693, 57939, 59241, 71734, 77252, 78988, 97188, 107601, 113386, 115878, 118482, 135191, 143468, 170079, 215202, 226772, 231756, 236964, 251069, 270382, 340158, 405573, 430404, 502138, 540764, 680316, 753207, 811146, 1004276, 1506414, 1622292, 1757483, 3012828, 3514966, 5272449, 7029932, 10544898, 21089796]

約数ペア:

[(1, 21089796), (2, 10544898), (3, 7029932), (4, 5272449), (6, 3514966), (7, 3012828), (12, 1757483), (13, 1622292), (14, 1506414), (21, 1004276), (26, 811146), (28, 753207), (31, 680316), (39, 540764), (42, 502138), (49, 430404), (52, 405573), (62, 340158), (78, 270382), (84, 251069), (89, 236964), (91, 231756), (93, 226772), (98, 215202), (124, 170079), (147, 143468), (156, 135191), (178, 118482), (182, 115878), (186, 113386), (196, 107601), (217, 97188), (267, 78988), (273, 77252), (294, 71734), (356, 59241), (364, 57939), (372, 56693), (403, 52332), (434, 48594), (534, 39494), (546, 38626), (588, 35867), (623, 33852), (637, 33108), (651, 32396), (806, 26166), (868, 24297), (1068, 19747), (1092, 19313), (1157, 18228), (1209, 17444), (1246, 16926), (1274, 16554), (1302, 16198), (1519, 13884), (1612, 13083), (1869, 11284), (1911, 11036), (2314, 9114), (2418, 8722), (2492, 8463), (2548, 8277), (2604, 8099), (2759, 7644), (2821, 7476), (3038, 6942), (3471, 6076), (3738, 5642), (3822, 5518), (4361, 4836), (4557, 4628)]