20157480

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:464

約数の個数: 192

約数和(自身を含む): 78998400

約数和(自身を除く): 58840920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 24, 28, 30, 35, 36, 38, 40, 42, 45, 56, 57, 60, 63, 70, 72, 76, 84, 90, 95, 105, 114, 120, 126, 133, 140, 152, 168, 171, 180, 190, 210, 228, 252, 266, 280, 285, 315, 342, 360, 380, 399, 420, 421, 456, 504, 532, 570, 630, 665, 684, 760, 798, 840, 842, 855, 1064, 1140, 1197, 1260, 1263, 1330, 1368, 1596, 1684, 1710, 1995, 2105, 2280, 2394, 2520, 2526, 2660, 2947, 3192, 3368, 3420, 3789, 3990, 4210, 4788, 5052, 5320, 5894, 5985, 6315, 6840, 7578, 7980, 7999, 8420, 8841, 9576, 10104, 11788, 11970, 12630, 14735, 15156, 15960, 15998, 16840, 17682, 18945, 23576, 23940, 23997, 25260, 26523, 29470, 30312, 31996, 35364, 37890, 39995, 44205, 47880, 47994, 50520, 53046, 55993, 58940, 63992, 70728, 71991, 75780, 79990, 88410, 95988, 106092, 111986, 117880, 119985, 132615, 143982, 151560, 159980, 167979, 176820, 191976, 212184, 223972, 239970, 265230, 279965, 287964, 319960, 335958, 353640, 359955, 447944, 479940, 503937, 530460, 559930, 575928, 671916, 719910, 839895, 959880, 1007874, 1060920, 1119860, 1343832, 1439820, 1679790, 2015748, 2239720, 2519685, 2879640, 3359580, 4031496, 5039370, 6719160, 10078740, 20157480]

約数ペア:

[(1, 20157480), (2, 10078740), (3, 6719160), (4, 5039370), (5, 4031496), (6, 3359580), (7, 2879640), (8, 2519685), (9, 2239720), (10, 2015748), (12, 1679790), (14, 1439820), (15, 1343832), (18, 1119860), (19, 1060920), (20, 1007874), (21, 959880), (24, 839895), (28, 719910), (30, 671916), (35, 575928), (36, 559930), (38, 530460), (40, 503937), (42, 479940), (45, 447944), (56, 359955), (57, 353640), (60, 335958), (63, 319960), (70, 287964), (72, 279965), (76, 265230), (84, 239970), (90, 223972), (95, 212184), (105, 191976), (114, 176820), (120, 167979), (126, 159980), (133, 151560), (140, 143982), (152, 132615), (168, 119985), (171, 117880), (180, 111986), (190, 106092), (210, 95988), (228, 88410), (252, 79990), (266, 75780), (280, 71991), (285, 70728), (315, 63992), (342, 58940), (360, 55993), (380, 53046), (399, 50520), (420, 47994), (421, 47880), (456, 44205), (504, 39995), (532, 37890), (570, 35364), (630, 31996), (665, 30312), (684, 29470), (760, 26523), (798, 25260), (840, 23997), (842, 23940), (855, 23576), (1064, 18945), (1140, 17682), (1197, 16840), (1260, 15998), (1263, 15960), (1330, 15156), (1368, 14735), (1596, 12630), (1684, 11970), (1710, 11788), (1995, 10104), (2105, 9576), (2280, 8841), (2394, 8420), (2520, 7999), (2526, 7980), (2660, 7578), (2947, 6840), (3192, 6315), (3368, 5985), (3420, 5894), (3789, 5320), (3990, 5052), (4210, 4788)]