78480220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:180

約数の個数: 144

約数和(自身を含む): 212502528

約数和(自身を除く): 134022308

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 107, 124, 130, 140, 155, 169, 182, 214, 217, 260, 310, 338, 364, 403, 428, 434, 455, 535, 620, 676, 749, 806, 845, 868, 910, 1070, 1085, 1183, 1391, 1498, 1612, 1690, 1820, 2015, 2140, 2170, 2366, 2782, 2821, 2996, 3317, 3380, 3745, 4030, 4340, 4732, 5239, 5564, 5642, 5915, 6634, 6955, 7490, 8060, 9737, 10478, 11284, 11830, 13268, 13910, 14105, 14980, 16585, 18083, 19474, 20956, 23219, 23660, 26195, 27820, 28210, 33170, 36166, 36673, 38948, 43121, 46438, 48685, 52390, 56420, 66340, 72332, 73346, 86242, 90415, 92876, 97370, 104780, 116095, 126581, 146692, 172484, 180830, 183365, 194740, 215605, 232190, 253162, 301847, 361660, 366730, 431210, 464380, 506324, 560573, 603694, 632905, 733460, 862420, 1121146, 1207388, 1265810, 1509235, 2242292, 2531620, 2802865, 3018470, 3924011, 5605730, 6036940, 7848022, 11211460, 15696044, 19620055, 39240110, 78480220]

約数ペア:

[(1, 78480220), (2, 39240110), (4, 19620055), (5, 15696044), (7, 11211460), (10, 7848022), (13, 6036940), (14, 5605730), (20, 3924011), (26, 3018470), (28, 2802865), (31, 2531620), (35, 2242292), (52, 1509235), (62, 1265810), (65, 1207388), (70, 1121146), (91, 862420), (107, 733460), (124, 632905), (130, 603694), (140, 560573), (155, 506324), (169, 464380), (182, 431210), (214, 366730), (217, 361660), (260, 301847), (310, 253162), (338, 232190), (364, 215605), (403, 194740), (428, 183365), (434, 180830), (455, 172484), (535, 146692), (620, 126581), (676, 116095), (749, 104780), (806, 97370), (845, 92876), (868, 90415), (910, 86242), (1070, 73346), (1085, 72332), (1183, 66340), (1391, 56420), (1498, 52390), (1612, 48685), (1690, 46438), (1820, 43121), (2015, 38948), (2140, 36673), (2170, 36166), (2366, 33170), (2782, 28210), (2821, 27820), (2996, 26195), (3317, 23660), (3380, 23219), (3745, 20956), (4030, 19474), (4340, 18083), (4732, 16585), (5239, 14980), (5564, 14105), (5642, 13910), (5915, 13268), (6634, 11830), (6955, 11284), (7490, 10478), (8060, 9737)]