19983780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1609}}^1$

素因数の和:1650

約数の個数: 96

約数和(自身を含む): 64915200

約数和(自身を除く): 44931420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 90, 92, 108, 115, 135, 138, 180, 207, 230, 270, 276, 345, 414, 460, 540, 621, 690, 828, 1035, 1242, 1380, 1609, 2070, 2484, 3105, 3218, 4140, 4827, 6210, 6436, 8045, 9654, 12420, 14481, 16090, 19308, 24135, 28962, 32180, 37007, 43443, 48270, 57924, 72405, 74014, 86886, 96540, 111021, 144810, 148028, 173772, 185035, 217215, 222042, 289620, 333063, 370070, 434430, 444084, 555105, 666126, 740140, 868860, 999189, 1110210, 1332252, 1665315, 1998378, 2220420, 3330630, 3996756, 4995945, 6661260, 9991890, 19983780]

約数ペア:

[(1, 19983780), (2, 9991890), (3, 6661260), (4, 4995945), (5, 3996756), (6, 3330630), (9, 2220420), (10, 1998378), (12, 1665315), (15, 1332252), (18, 1110210), (20, 999189), (23, 868860), (27, 740140), (30, 666126), (36, 555105), (45, 444084), (46, 434430), (54, 370070), (60, 333063), (69, 289620), (90, 222042), (92, 217215), (108, 185035), (115, 173772), (135, 148028), (138, 144810), (180, 111021), (207, 96540), (230, 86886), (270, 74014), (276, 72405), (345, 57924), (414, 48270), (460, 43443), (540, 37007), (621, 32180), (690, 28962), (828, 24135), (1035, 19308), (1242, 16090), (1380, 14481), (1609, 12420), (2070, 9654), (2484, 8045), (3105, 6436), (3218, 6210), (4140, 4827)]