19517560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:512

約数の個数: 64

約数和(自身を含む): 47095200

約数和(自身を除く): 27577640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 380, 421, 488, 610, 760, 842, 1159, 1220, 1684, 2105, 2318, 2440, 3368, 4210, 4636, 5795, 7999, 8420, 9272, 11590, 15998, 16840, 23180, 25681, 31996, 39995, 46360, 51362, 63992, 79990, 102724, 128405, 159980, 205448, 256810, 319960, 487939, 513620, 975878, 1027240, 1951756, 2439695, 3903512, 4879390, 9758780, 19517560]

約数ペア:

[(1, 19517560), (2, 9758780), (4, 4879390), (5, 3903512), (8, 2439695), (10, 1951756), (19, 1027240), (20, 975878), (38, 513620), (40, 487939), (61, 319960), (76, 256810), (95, 205448), (122, 159980), (152, 128405), (190, 102724), (244, 79990), (305, 63992), (380, 51362), (421, 46360), (488, 39995), (610, 31996), (760, 25681), (842, 23180), (1159, 16840), (1220, 15998), (1684, 11590), (2105, 9272), (2318, 8420), (2440, 7999), (3368, 5795), (4210, 4636)]