20530458

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{397}}^1$

素因数の和:448

約数の個数: 72

約数和(自身を含む): 51129468

約数和(自身を除く): 30599010

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 169, 221, 234, 306, 338, 397, 442, 507, 663, 794, 1014, 1191, 1326, 1521, 1989, 2382, 2873, 3042, 3573, 3978, 5161, 5746, 6749, 7146, 8619, 10322, 13498, 15483, 17238, 20247, 25857, 30966, 40494, 46449, 51714, 60741, 67093, 87737, 92898, 121482, 134186, 175474, 201279, 263211, 402558, 526422, 603837, 789633, 1140581, 1207674, 1579266, 2281162, 3421743, 6843486, 10265229, 20530458]

約数ペア:

[(1, 20530458), (2, 10265229), (3, 6843486), (6, 3421743), (9, 2281162), (13, 1579266), (17, 1207674), (18, 1140581), (26, 789633), (34, 603837), (39, 526422), (51, 402558), (78, 263211), (102, 201279), (117, 175474), (153, 134186), (169, 121482), (221, 92898), (234, 87737), (306, 67093), (338, 60741), (397, 51714), (442, 46449), (507, 40494), (663, 30966), (794, 25857), (1014, 20247), (1191, 17238), (1326, 15483), (1521, 13498), (1989, 10322), (2382, 8619), (2873, 7146), (3042, 6749), (3573, 5746), (3978, 5161)]