21438780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2953}}^1$

素因数の和:2987

約数の個数: 72

約数和(自身を含む): 66004176

約数和(自身を除く): 44565396

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 121, 132, 165, 220, 242, 330, 363, 484, 605, 660, 726, 1210, 1452, 1815, 2420, 2953, 3630, 5906, 7260, 8859, 11812, 14765, 17718, 29530, 32483, 35436, 44295, 59060, 64966, 88590, 97449, 129932, 162415, 177180, 194898, 324830, 357313, 389796, 487245, 649660, 714626, 974490, 1071939, 1429252, 1786565, 1948980, 2143878, 3573130, 4287756, 5359695, 7146260, 10719390, 21438780]

約数ペア:

[(1, 21438780), (2, 10719390), (3, 7146260), (4, 5359695), (5, 4287756), (6, 3573130), (10, 2143878), (11, 1948980), (12, 1786565), (15, 1429252), (20, 1071939), (22, 974490), (30, 714626), (33, 649660), (44, 487245), (55, 389796), (60, 357313), (66, 324830), (110, 194898), (121, 177180), (132, 162415), (165, 129932), (220, 97449), (242, 88590), (330, 64966), (363, 59060), (484, 44295), (605, 35436), (660, 32483), (726, 29530), (1210, 17718), (1452, 14765), (1815, 11812), (2420, 8859), (2953, 7260), (3630, 5906)]