20819820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2609}}^1$

素因数の和:2647

約数の個数: 96

約数和(自身を含む): 70156800

約数和(自身を除く): 49336980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2609, 2660, 3990, 5218, 7827, 7980, 10436, 13045, 15654, 18263, 26090, 31308, 36526, 39135, 49571, 52180, 54789, 73052, 78270, 91315, 99142, 109578, 148713, 156540, 182630, 198284, 219156, 247855, 273945, 297426, 346997, 365260, 495710, 547890, 594852, 693994, 743565, 991420, 1040991, 1095780, 1387988, 1487130, 1734985, 2081982, 2974260, 3469970, 4163964, 5204955, 6939940, 10409910, 20819820]

約数ペア:

[(1, 20819820), (2, 10409910), (3, 6939940), (4, 5204955), (5, 4163964), (6, 3469970), (7, 2974260), (10, 2081982), (12, 1734985), (14, 1487130), (15, 1387988), (19, 1095780), (20, 1040991), (21, 991420), (28, 743565), (30, 693994), (35, 594852), (38, 547890), (42, 495710), (57, 365260), (60, 346997), (70, 297426), (76, 273945), (84, 247855), (95, 219156), (105, 198284), (114, 182630), (133, 156540), (140, 148713), (190, 109578), (210, 99142), (228, 91315), (266, 78270), (285, 73052), (380, 54789), (399, 52180), (420, 49571), (532, 39135), (570, 36526), (665, 31308), (798, 26090), (1140, 18263), (1330, 15654), (1596, 13045), (1995, 10436), (2609, 7980), (2660, 7827), (3990, 5218)]