20803239920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{839}}^1\times {\mathrm{5081}}^1$

素因数の和:5994

約数の個数: 80

約数和(自身を含む): 49228724160

約数和(自身を除く): 28425484240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 839, 976, 1220, 1678, 2440, 3356, 4195, 4880, 5081, 6712, 8390, 10162, 13424, 16780, 20324, 25405, 33560, 40648, 50810, 51179, 67120, 81296, 101620, 102358, 203240, 204716, 255895, 309941, 406480, 409432, 511790, 619882, 818864, 1023580, 1239764, 1549705, 2047160, 2479528, 3099410, 4094320, 4262959, 4959056, 6198820, 8525918, 12397640, 17051836, 21314795, 24795280, 34103672, 42629590, 68207344, 85259180, 170518360, 260040499, 341036720, 520080998, 1040161996, 1300202495, 2080323992, 2600404990, 4160647984, 5200809980, 10401619960, 20803239920]

約数ペア:

[(1, 20803239920), (2, 10401619960), (4, 5200809980), (5, 4160647984), (8, 2600404990), (10, 2080323992), (16, 1300202495), (20, 1040161996), (40, 520080998), (61, 341036720), (80, 260040499), (122, 170518360), (244, 85259180), (305, 68207344), (488, 42629590), (610, 34103672), (839, 24795280), (976, 21314795), (1220, 17051836), (1678, 12397640), (2440, 8525918), (3356, 6198820), (4195, 4959056), (4880, 4262959), (5081, 4094320), (6712, 3099410), (8390, 2479528), (10162, 2047160), (13424, 1549705), (16780, 1239764), (20324, 1023580), (25405, 818864), (33560, 619882), (40648, 511790), (50810, 409432), (51179, 406480), (67120, 309941), (81296, 255895), (101620, 204716), (102358, 203240)]