21772980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1657}}^1$

素因数の和:1745

約数の個数: 72

約数和(自身を含む): 66989832

約数和(自身を除く): 45216852

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 73, 90, 146, 180, 219, 292, 365, 438, 657, 730, 876, 1095, 1314, 1460, 1657, 2190, 2628, 3285, 3314, 4380, 4971, 6570, 6628, 8285, 9942, 13140, 14913, 16570, 19884, 24855, 29826, 33140, 49710, 59652, 74565, 99420, 120961, 149130, 241922, 298260, 362883, 483844, 604805, 725766, 1088649, 1209610, 1451532, 1814415, 2177298, 2419220, 3628830, 4354596, 5443245, 7257660, 10886490, 21772980]

約数ペア:

[(1, 21772980), (2, 10886490), (3, 7257660), (4, 5443245), (5, 4354596), (6, 3628830), (9, 2419220), (10, 2177298), (12, 1814415), (15, 1451532), (18, 1209610), (20, 1088649), (30, 725766), (36, 604805), (45, 483844), (60, 362883), (73, 298260), (90, 241922), (146, 149130), (180, 120961), (219, 99420), (292, 74565), (365, 59652), (438, 49710), (657, 33140), (730, 29826), (876, 24855), (1095, 19884), (1314, 16570), (1460, 14913), (1657, 13140), (2190, 9942), (2628, 8285), (3285, 6628), (3314, 6570), (4380, 4971)]