21225438

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1487}}^1$

素因数の和:1569

約数の個数: 48

約数和(自身を含む): 50371776

約数和(自身を除く): 29146338

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 61, 78, 117, 122, 183, 234, 366, 549, 793, 1098, 1487, 1586, 2379, 2974, 4461, 4758, 7137, 8922, 13383, 14274, 19331, 26766, 38662, 57993, 90707, 115986, 173979, 181414, 272121, 347958, 544242, 816363, 1179191, 1632726, 2358382, 3537573, 7075146, 10612719, 21225438]

約数ペア:

[(1, 21225438), (2, 10612719), (3, 7075146), (6, 3537573), (9, 2358382), (13, 1632726), (18, 1179191), (26, 816363), (39, 544242), (61, 347958), (78, 272121), (117, 181414), (122, 173979), (183, 115986), (234, 90707), (366, 57993), (549, 38662), (793, 26766), (1098, 19331), (1487, 14274), (1586, 13383), (2379, 8922), (2974, 7137), (4461, 4758)]