20439720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8111}}^1$

素因数の和:8135

約数の個数: 96

約数和(自身を含む): 75928320

約数和(自身を除く): 55488600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8111, 16222, 24333, 32444, 40555, 48666, 56777, 64888, 72999, 81110, 97332, 113554, 121665, 145998, 162220, 170331, 194664, 227108, 243330, 283885, 291996, 324440, 340662, 364995, 454216, 486660, 510993, 567770, 583992, 681324, 729990, 851655, 973320, 1021986, 1135540, 1362648, 1459980, 1703310, 2043972, 2271080, 2554965, 2919960, 3406620, 4087944, 5109930, 6813240, 10219860, 20439720]

約数ペア:

[(1, 20439720), (2, 10219860), (3, 6813240), (4, 5109930), (5, 4087944), (6, 3406620), (7, 2919960), (8, 2554965), (9, 2271080), (10, 2043972), (12, 1703310), (14, 1459980), (15, 1362648), (18, 1135540), (20, 1021986), (21, 973320), (24, 851655), (28, 729990), (30, 681324), (35, 583992), (36, 567770), (40, 510993), (42, 486660), (45, 454216), (56, 364995), (60, 340662), (63, 324440), (70, 291996), (72, 283885), (84, 243330), (90, 227108), (105, 194664), (120, 170331), (126, 162220), (140, 145998), (168, 121665), (180, 113554), (210, 97332), (252, 81110), (280, 72999), (315, 64888), (360, 56777), (420, 48666), (504, 40555), (630, 32444), (840, 24333), (1260, 16222), (2520, 8111)]