28373540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1789}}^1$

素因数の和:1872

約数の個数: 48

約数和(自身を含む): 65256240

約数和(自身を除く): 36882700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 1789, 3172, 3578, 3965, 7156, 7930, 8945, 15860, 17890, 23257, 35780, 46514, 93028, 109129, 116285, 218258, 232570, 436516, 465140, 545645, 1091290, 1418677, 2182580, 2837354, 5674708, 7093385, 14186770, 28373540]

約数ペア:

[(1, 28373540), (2, 14186770), (4, 7093385), (5, 5674708), (10, 2837354), (13, 2182580), (20, 1418677), (26, 1091290), (52, 545645), (61, 465140), (65, 436516), (122, 232570), (130, 218258), (244, 116285), (260, 109129), (305, 93028), (610, 46514), (793, 35780), (1220, 23257), (1586, 17890), (1789, 15860), (3172, 8945), (3578, 7930), (3965, 7156)]