28251860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1$

素因数の和:110

約数の個数: 144

約数和(自身を含む): 78857856

約数和(自身を除く): 50605996

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 19, 20, 26, 28, 35, 38, 43, 52, 65, 70, 76, 86, 91, 95, 130, 133, 140, 172, 182, 190, 215, 247, 260, 266, 301, 361, 364, 380, 430, 455, 494, 532, 559, 602, 665, 722, 817, 860, 910, 988, 1118, 1204, 1235, 1330, 1444, 1505, 1634, 1729, 1805, 1820, 2236, 2470, 2527, 2660, 2795, 3010, 3268, 3458, 3610, 3913, 4085, 4693, 4940, 5054, 5590, 5719, 6020, 6916, 7220, 7826, 8170, 8645, 9386, 10108, 10621, 11180, 11438, 12635, 15523, 15652, 16340, 17290, 18772, 19565, 21242, 22876, 23465, 25270, 28595, 31046, 32851, 34580, 39130, 42484, 46930, 50540, 53105, 57190, 62092, 65702, 74347, 77615, 78260, 93860, 106210, 108661, 114380, 131404, 148694, 155230, 164255, 201799, 212420, 217322, 297388, 310460, 328510, 371735, 403598, 434644, 543305, 657020, 743470, 807196, 1008995, 1086610, 1412593, 1486940, 2017990, 2173220, 2825186, 4035980, 5650372, 7062965, 14125930, 28251860]

約数ペア:

[(1, 28251860), (2, 14125930), (4, 7062965), (5, 5650372), (7, 4035980), (10, 2825186), (13, 2173220), (14, 2017990), (19, 1486940), (20, 1412593), (26, 1086610), (28, 1008995), (35, 807196), (38, 743470), (43, 657020), (52, 543305), (65, 434644), (70, 403598), (76, 371735), (86, 328510), (91, 310460), (95, 297388), (130, 217322), (133, 212420), (140, 201799), (172, 164255), (182, 155230), (190, 148694), (215, 131404), (247, 114380), (260, 108661), (266, 106210), (301, 93860), (361, 78260), (364, 77615), (380, 74347), (430, 65702), (455, 62092), (494, 57190), (532, 53105), (559, 50540), (602, 46930), (665, 42484), (722, 39130), (817, 34580), (860, 32851), (910, 31046), (988, 28595), (1118, 25270), (1204, 23465), (1235, 22876), (1330, 21242), (1444, 19565), (1505, 18772), (1634, 17290), (1729, 16340), (1805, 15652), (1820, 15523), (2236, 12635), (2470, 11438), (2527, 11180), (2660, 10621), (2795, 10108), (3010, 9386), (3268, 8645), (3458, 8170), (3610, 7826), (3913, 7220), (4085, 6916), (4693, 6020), (4940, 5719), (5054, 5590)]