21806001

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 38188800

約数和(自身を除く): 16382799

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 101, 149, 161, 207, 303, 447, 483, 707, 909, 1043, 1341, 1449, 2121, 2323, 3129, 3427, 6363, 6969, 9387, 10281, 15049, 16261, 20907, 23989, 30843, 45147, 48783, 71967, 105343, 135441, 146349, 215901, 316029, 346127, 948087, 1038381, 2422889, 3115143, 7268667, 21806001]

約数ペア:

[(1, 21806001), (3, 7268667), (7, 3115143), (9, 2422889), (21, 1038381), (23, 948087), (63, 346127), (69, 316029), (101, 215901), (149, 146349), (161, 135441), (207, 105343), (303, 71967), (447, 48783), (483, 45147), (707, 30843), (909, 23989), (1043, 20907), (1341, 16261), (1449, 15049), (2121, 10281), (2323, 9387), (3129, 6969), (3427, 6363)]