78656580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{211}}^1$

素因数の和:354

約数の個数: 144

約数和(自身を含む): 254654400

約数和(自身を除く): 175997820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 109, 114, 171, 180, 190, 211, 218, 228, 285, 327, 342, 380, 422, 436, 545, 570, 633, 654, 684, 844, 855, 981, 1055, 1090, 1140, 1266, 1308, 1635, 1710, 1899, 1962, 2071, 2110, 2180, 2532, 3165, 3270, 3420, 3798, 3924, 4009, 4142, 4220, 4905, 6213, 6330, 6540, 7596, 8018, 8284, 9495, 9810, 10355, 12027, 12426, 12660, 16036, 18639, 18990, 19620, 20045, 20710, 22999, 24054, 24852, 31065, 36081, 37278, 37980, 40090, 41420, 45998, 48108, 60135, 62130, 68997, 72162, 74556, 80180, 91996, 93195, 114995, 120270, 124260, 137994, 144324, 180405, 186390, 206991, 229990, 240540, 275988, 344985, 360810, 372780, 413982, 436981, 459980, 689970, 721620, 827964, 873962, 1034955, 1310943, 1379940, 1747924, 2069910, 2184905, 2621886, 3932829, 4139820, 4369810, 5243772, 6554715, 7865658, 8739620, 13109430, 15731316, 19664145, 26218860, 39328290, 78656580]

約数ペア:

[(1, 78656580), (2, 39328290), (3, 26218860), (4, 19664145), (5, 15731316), (6, 13109430), (9, 8739620), (10, 7865658), (12, 6554715), (15, 5243772), (18, 4369810), (19, 4139820), (20, 3932829), (30, 2621886), (36, 2184905), (38, 2069910), (45, 1747924), (57, 1379940), (60, 1310943), (76, 1034955), (90, 873962), (95, 827964), (109, 721620), (114, 689970), (171, 459980), (180, 436981), (190, 413982), (211, 372780), (218, 360810), (228, 344985), (285, 275988), (327, 240540), (342, 229990), (380, 206991), (422, 186390), (436, 180405), (545, 144324), (570, 137994), (633, 124260), (654, 120270), (684, 114995), (844, 93195), (855, 91996), (981, 80180), (1055, 74556), (1090, 72162), (1140, 68997), (1266, 62130), (1308, 60135), (1635, 48108), (1710, 45998), (1899, 41420), (1962, 40090), (2071, 37980), (2110, 37278), (2180, 36081), (2532, 31065), (3165, 24852), (3270, 24054), (3420, 22999), (3798, 20710), (3924, 20045), (4009, 19620), (4142, 18990), (4220, 18639), (4905, 16036), (6213, 12660), (6330, 12426), (6540, 12027), (7596, 10355), (8018, 9810), (8284, 9495)]