20490876

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:152

約数の個数: 144

約数和(自身を含む): 63551488

約数和(自身を除く): 43060612

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 43, 61, 62, 63, 84, 86, 93, 122, 124, 126, 129, 172, 183, 186, 217, 244, 252, 258, 279, 301, 366, 372, 387, 427, 434, 516, 549, 558, 602, 651, 732, 774, 854, 868, 903, 1098, 1116, 1204, 1281, 1302, 1333, 1548, 1708, 1806, 1891, 1953, 2196, 2562, 2604, 2623, 2666, 2709, 3612, 3782, 3843, 3906, 3999, 5124, 5246, 5332, 5418, 5673, 7564, 7686, 7812, 7869, 7998, 9331, 10492, 10836, 11346, 11997, 13237, 15372, 15738, 15996, 17019, 18361, 18662, 22692, 23607, 23994, 26474, 27993, 31476, 34038, 36722, 37324, 39711, 47214, 47988, 52948, 55083, 55986, 68076, 73444, 79422, 81313, 83979, 94428, 110166, 111972, 119133, 158844, 162626, 165249, 167958, 220332, 238266, 243939, 325252, 330498, 335916, 476532, 487878, 569191, 660996, 731817, 975756, 1138382, 1463634, 1707573, 2276764, 2927268, 3415146, 5122719, 6830292, 10245438, 20490876]

約数ペア:

[(1, 20490876), (2, 10245438), (3, 6830292), (4, 5122719), (6, 3415146), (7, 2927268), (9, 2276764), (12, 1707573), (14, 1463634), (18, 1138382), (21, 975756), (28, 731817), (31, 660996), (36, 569191), (42, 487878), (43, 476532), (61, 335916), (62, 330498), (63, 325252), (84, 243939), (86, 238266), (93, 220332), (122, 167958), (124, 165249), (126, 162626), (129, 158844), (172, 119133), (183, 111972), (186, 110166), (217, 94428), (244, 83979), (252, 81313), (258, 79422), (279, 73444), (301, 68076), (366, 55986), (372, 55083), (387, 52948), (427, 47988), (434, 47214), (516, 39711), (549, 37324), (558, 36722), (602, 34038), (651, 31476), (732, 27993), (774, 26474), (854, 23994), (868, 23607), (903, 22692), (1098, 18662), (1116, 18361), (1204, 17019), (1281, 15996), (1302, 15738), (1333, 15372), (1548, 13237), (1708, 11997), (1806, 11346), (1891, 10836), (1953, 10492), (2196, 9331), (2562, 7998), (2604, 7869), (2623, 7812), (2666, 7686), (2709, 7564), (3612, 5673), (3782, 5418), (3843, 5332), (3906, 5246), (3999, 5124)]