2155120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:134

約数の個数: 80

約数和(自身を含む): 5713920

約数和(自身を除く): 3558800

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 79, 80, 88, 110, 124, 155, 158, 176, 220, 248, 310, 316, 341, 395, 440, 496, 620, 632, 682, 790, 869, 880, 1240, 1264, 1364, 1580, 1705, 1738, 2449, 2480, 2728, 3160, 3410, 3476, 4345, 4898, 5456, 6320, 6820, 6952, 8690, 9796, 12245, 13640, 13904, 17380, 19592, 24490, 26939, 27280, 34760, 39184, 48980, 53878, 69520, 97960, 107756, 134695, 195920, 215512, 269390, 431024, 538780, 1077560, 2155120]

約数ペア:

[(1, 2155120), (2, 1077560), (4, 538780), (5, 431024), (8, 269390), (10, 215512), (11, 195920), (16, 134695), (20, 107756), (22, 97960), (31, 69520), (40, 53878), (44, 48980), (55, 39184), (62, 34760), (79, 27280), (80, 26939), (88, 24490), (110, 19592), (124, 17380), (155, 13904), (158, 13640), (176, 12245), (220, 9796), (248, 8690), (310, 6952), (316, 6820), (341, 6320), (395, 5456), (440, 4898), (496, 4345), (620, 3476), (632, 3410), (682, 3160), (790, 2728), (869, 2480), (880, 2449), (1240, 1738), (1264, 1705), (1364, 1580)]