28526820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:370

約数の個数: 144

約数和(自身を含む): 96219648

約数和(自身を除く): 67692828

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 210, 217, 245, 294, 310, 313, 372, 420, 434, 465, 490, 588, 620, 626, 651, 735, 868, 930, 939, 980, 1085, 1252, 1302, 1470, 1519, 1565, 1860, 1878, 2170, 2191, 2604, 2940, 3038, 3130, 3255, 3756, 4340, 4382, 4557, 4695, 6076, 6260, 6510, 6573, 7595, 8764, 9114, 9390, 9703, 10955, 13020, 13146, 15190, 15337, 18228, 18780, 19406, 21910, 22785, 26292, 29109, 30380, 30674, 32865, 38812, 43820, 45570, 46011, 48515, 58218, 61348, 65730, 67921, 76685, 91140, 92022, 97030, 116436, 131460, 135842, 145545, 153370, 184044, 194060, 203763, 230055, 271684, 291090, 306740, 339605, 407526, 460110, 475447, 582180, 679210, 815052, 920220, 950894, 1018815, 1358420, 1426341, 1901788, 2037630, 2377235, 2852682, 4075260, 4754470, 5705364, 7131705, 9508940, 14263410, 28526820]

約数ペア:

[(1, 28526820), (2, 14263410), (3, 9508940), (4, 7131705), (5, 5705364), (6, 4754470), (7, 4075260), (10, 2852682), (12, 2377235), (14, 2037630), (15, 1901788), (20, 1426341), (21, 1358420), (28, 1018815), (30, 950894), (31, 920220), (35, 815052), (42, 679210), (49, 582180), (60, 475447), (62, 460110), (70, 407526), (84, 339605), (93, 306740), (98, 291090), (105, 271684), (124, 230055), (140, 203763), (147, 194060), (155, 184044), (186, 153370), (196, 145545), (210, 135842), (217, 131460), (245, 116436), (294, 97030), (310, 92022), (313, 91140), (372, 76685), (420, 67921), (434, 65730), (465, 61348), (490, 58218), (588, 48515), (620, 46011), (626, 45570), (651, 43820), (735, 38812), (868, 32865), (930, 30674), (939, 30380), (980, 29109), (1085, 26292), (1252, 22785), (1302, 21910), (1470, 19406), (1519, 18780), (1565, 18228), (1860, 15337), (1878, 15190), (2170, 13146), (2191, 13020), (2604, 10955), (2940, 9703), (3038, 9390), (3130, 9114), (3255, 8764), (3756, 7595), (4340, 6573), (4382, 6510), (4557, 6260), (4695, 6076)]