20145641480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1\times {\mathrm{797}}^1$

素因数の和:1327

約数の個数: 128

約数和(自身を含む): 48492864000

約数和(自身を除く): 28347222520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 79, 95, 152, 158, 190, 316, 380, 395, 421, 632, 760, 790, 797, 842, 1501, 1580, 1594, 1684, 2105, 3002, 3160, 3188, 3368, 3985, 4210, 6004, 6376, 7505, 7970, 7999, 8420, 12008, 15010, 15143, 15940, 15998, 16840, 30020, 30286, 31880, 31996, 33259, 39995, 60040, 60572, 62963, 63992, 66518, 75715, 79990, 121144, 125926, 133036, 151430, 159980, 166295, 251852, 266072, 302860, 314815, 319960, 332590, 335537, 503704, 605720, 629630, 631921, 665180, 671074, 1196297, 1259260, 1263842, 1330360, 1342148, 1677685, 2392594, 2518520, 2527684, 2684296, 3159605, 3355370, 4785188, 5055368, 5981485, 6319210, 6375203, 6710740, 9570376, 11962970, 12638420, 12750406, 13421480, 23925940, 25276840, 25500812, 26507423, 31876015, 47851880, 51001624, 53014846, 63752030, 106029692, 127504060, 132537115, 212059384, 255008120, 265074230, 503641037, 530148460, 1007282074, 1060296920, 2014564148, 2518205185, 4029128296, 5036410370, 10072820740, 20145641480]

約数ペア:

[(1, 20145641480), (2, 10072820740), (4, 5036410370), (5, 4029128296), (8, 2518205185), (10, 2014564148), (19, 1060296920), (20, 1007282074), (38, 530148460), (40, 503641037), (76, 265074230), (79, 255008120), (95, 212059384), (152, 132537115), (158, 127504060), (190, 106029692), (316, 63752030), (380, 53014846), (395, 51001624), (421, 47851880), (632, 31876015), (760, 26507423), (790, 25500812), (797, 25276840), (842, 23925940), (1501, 13421480), (1580, 12750406), (1594, 12638420), (1684, 11962970), (2105, 9570376), (3002, 6710740), (3160, 6375203), (3188, 6319210), (3368, 5981485), (3985, 5055368), (4210, 4785188), (6004, 3355370), (6376, 3159605), (7505, 2684296), (7970, 2527684), (7999, 2518520), (8420, 2392594), (12008, 1677685), (15010, 1342148), (15143, 1330360), (15940, 1263842), (15998, 1259260), (16840, 1196297), (30020, 671074), (30286, 665180), (31880, 631921), (31996, 629630), (33259, 605720), (39995, 503704), (60040, 335537), (60572, 332590), (62963, 319960), (63992, 314815), (66518, 302860), (75715, 266072), (79990, 251852), (121144, 166295), (125926, 159980), (133036, 151430)]