20099447680

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{77929}}^1$

素因数の和:77992

約数の個数: 128

約数和(自身を含む): 53416339200

約数和(自身を除く): 33316891520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 640, 806, 832, 992, 1040, 1240, 1612, 1664, 1984, 2015, 2080, 2480, 3224, 3968, 4030, 4160, 4960, 6448, 8060, 8320, 9920, 12896, 16120, 19840, 25792, 32240, 51584, 64480, 77929, 128960, 155858, 257920, 311716, 389645, 623432, 779290, 1013077, 1246864, 1558580, 2026154, 2415799, 2493728, 3117160, 4052308, 4831598, 4987456, 5065385, 6234320, 8104616, 9663196, 9974912, 10130770, 12078995, 12468640, 16209232, 19326392, 20261540, 24157990, 24937280, 31405387, 32418464, 38652784, 40523080, 48315980, 49874560, 62810774, 64836928, 77305568, 81046160, 96631960, 125621548, 129673856, 154611136, 157026935, 162092320, 193263920, 251243096, 309222272, 314053870, 324184640, 386527840, 502486192, 628107740, 648369280, 773055680, 1004972384, 1256215480, 1546111360, 2009944768, 2512430960, 4019889536, 5024861920, 10049723840, 20099447680]

約数ペア:

[(1, 20099447680), (2, 10049723840), (4, 5024861920), (5, 4019889536), (8, 2512430960), (10, 2009944768), (13, 1546111360), (16, 1256215480), (20, 1004972384), (26, 773055680), (31, 648369280), (32, 628107740), (40, 502486192), (52, 386527840), (62, 324184640), (64, 314053870), (65, 309222272), (80, 251243096), (104, 193263920), (124, 162092320), (128, 157026935), (130, 154611136), (155, 129673856), (160, 125621548), (208, 96631960), (248, 81046160), (260, 77305568), (310, 64836928), (320, 62810774), (403, 49874560), (416, 48315980), (496, 40523080), (520, 38652784), (620, 32418464), (640, 31405387), (806, 24937280), (832, 24157990), (992, 20261540), (1040, 19326392), (1240, 16209232), (1612, 12468640), (1664, 12078995), (1984, 10130770), (2015, 9974912), (2080, 9663196), (2480, 8104616), (3224, 6234320), (3968, 5065385), (4030, 4987456), (4160, 4831598), (4960, 4052308), (6448, 3117160), (8060, 2493728), (8320, 2415799), (9920, 2026154), (12896, 1558580), (16120, 1246864), (19840, 1013077), (25792, 779290), (32240, 623432), (51584, 389645), (64480, 311716), (77929, 257920), (128960, 155858)]