20806890500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199109}}^1$

素因数の和:199158

約数の個数: 96

約数和(自身を含む): 52182748800

約数和(自身を除く): 31375858300

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 125, 190, 209, 220, 250, 275, 380, 418, 475, 500, 550, 836, 950, 1045, 1100, 1375, 1900, 2090, 2375, 2750, 4180, 4750, 5225, 5500, 9500, 10450, 20900, 26125, 52250, 104500, 199109, 398218, 796436, 995545, 1991090, 2190199, 3783071, 3982180, 4380398, 4977725, 7566142, 8760796, 9955450, 10950995, 15132284, 18915355, 19910900, 21901990, 24888625, 37830710, 41613781, 43803980, 49777250, 54754975, 75661420, 83227562, 94576775, 99554500, 109509950, 166455124, 189153550, 208068905, 219019900, 273774875, 378307100, 416137810, 472883875, 547549750, 832275620, 945767750, 1040344525, 1095099500, 1891535500, 2080689050, 4161378100, 5201722625, 10403445250, 20806890500]

約数ペア:

[(1, 20806890500), (2, 10403445250), (4, 5201722625), (5, 4161378100), (10, 2080689050), (11, 1891535500), (19, 1095099500), (20, 1040344525), (22, 945767750), (25, 832275620), (38, 547549750), (44, 472883875), (50, 416137810), (55, 378307100), (76, 273774875), (95, 219019900), (100, 208068905), (110, 189153550), (125, 166455124), (190, 109509950), (209, 99554500), (220, 94576775), (250, 83227562), (275, 75661420), (380, 54754975), (418, 49777250), (475, 43803980), (500, 41613781), (550, 37830710), (836, 24888625), (950, 21901990), (1045, 19910900), (1100, 18915355), (1375, 15132284), (1900, 10950995), (2090, 9955450), (2375, 8760796), (2750, 7566142), (4180, 4977725), (4750, 4380398), (5225, 3982180), (5500, 3783071), (9500, 2190199), (10450, 1991090), (20900, 995545), (26125, 796436), (52250, 398218), (104500, 199109)]