20040540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25693}}^1$

素因数の和:25718

約数の個数: 48

約数和(自身を含む): 60432288

約数和(自身を除く): 40391748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25693, 51386, 77079, 102772, 128465, 154158, 256930, 308316, 334009, 385395, 513860, 668018, 770790, 1002027, 1336036, 1541580, 1670045, 2004054, 3340090, 4008108, 5010135, 6680180, 10020270, 20040540]

約数ペア:

[(1, 20040540), (2, 10020270), (3, 6680180), (4, 5010135), (5, 4008108), (6, 3340090), (10, 2004054), (12, 1670045), (13, 1541580), (15, 1336036), (20, 1002027), (26, 770790), (30, 668018), (39, 513860), (52, 385395), (60, 334009), (65, 308316), (78, 256930), (130, 154158), (156, 128465), (195, 102772), (260, 77079), (390, 51386), (780, 25693)]