19781160

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23549}}^1$

素因数の和:23570

約数の個数: 64

約数和(自身を含む): 67824000

約数和(自身を除く): 48042840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 23549, 47098, 70647, 94196, 117745, 141294, 164843, 188392, 235490, 282588, 329686, 353235, 470980, 494529, 565176, 659372, 706470, 824215, 941960, 989058, 1318744, 1412940, 1648430, 1978116, 2472645, 2825880, 3296860, 3956232, 4945290, 6593720, 9890580, 19781160]

約数ペア:

[(1, 19781160), (2, 9890580), (3, 6593720), (4, 4945290), (5, 3956232), (6, 3296860), (7, 2825880), (8, 2472645), (10, 1978116), (12, 1648430), (14, 1412940), (15, 1318744), (20, 989058), (21, 941960), (24, 824215), (28, 706470), (30, 659372), (35, 565176), (40, 494529), (42, 470980), (56, 353235), (60, 329686), (70, 282588), (84, 235490), (105, 188392), (120, 164843), (140, 141294), (168, 117745), (210, 94196), (280, 70647), (420, 47098), (840, 23549)]