51132640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:133

約数の個数: 144

約数和(自身を含む): 137241216

約数和(自身を除く): 86108576

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 61, 62, 65, 80, 104, 122, 124, 130, 155, 160, 169, 208, 244, 248, 260, 305, 310, 338, 403, 416, 488, 496, 520, 610, 620, 676, 793, 806, 845, 976, 992, 1040, 1220, 1240, 1352, 1586, 1612, 1690, 1891, 1952, 2015, 2080, 2440, 2480, 2704, 3172, 3224, 3380, 3782, 3965, 4030, 4880, 4960, 5239, 5408, 6344, 6448, 6760, 7564, 7930, 8060, 9455, 9760, 10309, 10478, 12688, 12896, 13520, 15128, 15860, 16120, 18910, 20618, 20956, 24583, 25376, 26195, 27040, 30256, 31720, 32240, 37820, 41236, 41912, 49166, 51545, 52390, 60512, 63440, 64480, 75640, 82472, 83824, 98332, 103090, 104780, 122915, 126880, 151280, 164944, 167648, 196664, 206180, 209560, 245830, 302560, 319579, 329888, 393328, 412360, 419120, 491660, 639158, 786656, 824720, 838240, 983320, 1278316, 1597895, 1649440, 1966640, 2556632, 3195790, 3933280, 5113264, 6391580, 10226528, 12783160, 25566320, 51132640]

約数ペア:

[(1, 51132640), (2, 25566320), (4, 12783160), (5, 10226528), (8, 6391580), (10, 5113264), (13, 3933280), (16, 3195790), (20, 2556632), (26, 1966640), (31, 1649440), (32, 1597895), (40, 1278316), (52, 983320), (61, 838240), (62, 824720), (65, 786656), (80, 639158), (104, 491660), (122, 419120), (124, 412360), (130, 393328), (155, 329888), (160, 319579), (169, 302560), (208, 245830), (244, 209560), (248, 206180), (260, 196664), (305, 167648), (310, 164944), (338, 151280), (403, 126880), (416, 122915), (488, 104780), (496, 103090), (520, 98332), (610, 83824), (620, 82472), (676, 75640), (793, 64480), (806, 63440), (845, 60512), (976, 52390), (992, 51545), (1040, 49166), (1220, 41912), (1240, 41236), (1352, 37820), (1586, 32240), (1612, 31720), (1690, 30256), (1891, 27040), (1952, 26195), (2015, 25376), (2080, 24583), (2440, 20956), (2480, 20618), (2704, 18910), (3172, 16120), (3224, 15860), (3380, 15128), (3782, 13520), (3965, 12896), (4030, 12688), (4880, 10478), (4960, 10309), (5239, 9760), (5408, 9455), (6344, 8060), (6448, 7930), (6760, 7564)]