28754817

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{367}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 49335552

約数和(自身を除く): 20580735

約数列:

[1, 3, 7, 13, 21, 39, 41, 49, 91, 123, 147, 273, 287, 367, 533, 637, 861, 1101, 1599, 1911, 2009, 2569, 3731, 4771, 6027, 7707, 11193, 14313, 15047, 17983, 26117, 33397, 45141, 53949, 78351, 100191, 105329, 195611, 233779, 315987, 586833, 701337, 737303, 1369277, 2211909, 4107831, 9584939, 28754817]

約数ペア:

[(1, 28754817), (3, 9584939), (7, 4107831), (13, 2211909), (21, 1369277), (39, 737303), (41, 701337), (49, 586833), (91, 315987), (123, 233779), (147, 195611), (273, 105329), (287, 100191), (367, 78351), (533, 53949), (637, 45141), (861, 33397), (1101, 26117), (1599, 17983), (1911, 15047), (2009, 14313), (2569, 11193), (3731, 7707), (4771, 6027)]