28341820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1787}}^1$

素因数の和:1870

約数の個数: 48

約数和(自身を含む): 65183328

約数和(自身を除く): 36841508

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 1787, 3172, 3574, 3965, 7148, 7930, 8935, 15860, 17870, 23231, 35740, 46462, 92924, 109007, 116155, 218014, 232310, 436028, 464620, 545035, 1090070, 1417091, 2180140, 2834182, 5668364, 7085455, 14170910, 28341820]

約数ペア:

[(1, 28341820), (2, 14170910), (4, 7085455), (5, 5668364), (10, 2834182), (13, 2180140), (20, 1417091), (26, 1090070), (52, 545035), (61, 464620), (65, 436028), (122, 232310), (130, 218014), (244, 116155), (260, 109007), (305, 92924), (610, 46462), (793, 35740), (1220, 23231), (1586, 17870), (1787, 15860), (3172, 8935), (3574, 7930), (3965, 7148)]