21536320

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:228

約数の個数: 112

約数和(自身を含む): 57351168

約数和(自身を除く): 35814848

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 167, 208, 248, 260, 310, 320, 334, 403, 416, 496, 520, 620, 668, 806, 832, 835, 992, 1040, 1240, 1336, 1612, 1670, 1984, 2015, 2080, 2171, 2480, 2672, 3224, 3340, 4030, 4160, 4342, 4960, 5177, 5344, 6448, 6680, 8060, 8684, 9920, 10354, 10688, 10855, 12896, 13360, 16120, 17368, 20708, 21710, 25792, 25885, 26720, 32240, 34736, 41416, 43420, 51770, 53440, 64480, 67301, 69472, 82832, 86840, 103540, 128960, 134602, 138944, 165664, 173680, 207080, 269204, 331328, 336505, 347360, 414160, 538408, 673010, 694720, 828320, 1076816, 1346020, 1656640, 2153632, 2692040, 4307264, 5384080, 10768160, 21536320]

約数ペア:

[(1, 21536320), (2, 10768160), (4, 5384080), (5, 4307264), (8, 2692040), (10, 2153632), (13, 1656640), (16, 1346020), (20, 1076816), (26, 828320), (31, 694720), (32, 673010), (40, 538408), (52, 414160), (62, 347360), (64, 336505), (65, 331328), (80, 269204), (104, 207080), (124, 173680), (130, 165664), (155, 138944), (160, 134602), (167, 128960), (208, 103540), (248, 86840), (260, 82832), (310, 69472), (320, 67301), (334, 64480), (403, 53440), (416, 51770), (496, 43420), (520, 41416), (620, 34736), (668, 32240), (806, 26720), (832, 25885), (835, 25792), (992, 21710), (1040, 20708), (1240, 17368), (1336, 16120), (1612, 13360), (1670, 12896), (1984, 10855), (2015, 10688), (2080, 10354), (2171, 9920), (2480, 8684), (2672, 8060), (3224, 6680), (3340, 6448), (4030, 5344), (4160, 5177), (4342, 4960)]