25566320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 120

約数和(自身を含む): 67531392

約数和(自身を除く): 41965072

約数列:

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

約数ペア:

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