12978680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2269}}^1$

素因数の和:2304

約数の個数: 64

約数和(自身を含む): 34322400

約数和(自身を除く): 21343720

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2269, 2860, 4538, 5720, 9076, 11345, 18152, 22690, 24959, 29497, 45380, 49918, 58994, 90760, 99836, 117988, 124795, 147485, 199672, 235976, 249590, 294970, 324467, 499180, 589940, 648934, 998360, 1179880, 1297868, 1622335, 2595736, 3244670, 6489340, 12978680]

約数ペア:

[(1, 12978680), (2, 6489340), (4, 3244670), (5, 2595736), (8, 1622335), (10, 1297868), (11, 1179880), (13, 998360), (20, 648934), (22, 589940), (26, 499180), (40, 324467), (44, 294970), (52, 249590), (55, 235976), (65, 199672), (88, 147485), (104, 124795), (110, 117988), (130, 99836), (143, 90760), (220, 58994), (260, 49918), (286, 45380), (440, 29497), (520, 24959), (572, 22690), (715, 18152), (1144, 11345), (1430, 9076), (2269, 5720), (2860, 4538)]