28918980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{347}}^1\times {\mathrm{463}}^1$

素因数の和:825

約数の個数: 72

約数和(自身を含む): 88163712

約数和(自身を除く): 59244732

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 347, 463, 694, 926, 1041, 1388, 1389, 1735, 1852, 2082, 2315, 2778, 3123, 3470, 4164, 4167, 4630, 5205, 5556, 6246, 6940, 6945, 8334, 9260, 10410, 12492, 13890, 15615, 16668, 20820, 20835, 27780, 31230, 41670, 62460, 83340, 160661, 321322, 481983, 642644, 803305, 963966, 1445949, 1606610, 1927932, 2409915, 2891898, 3213220, 4819830, 5783796, 7229745, 9639660, 14459490, 28918980]

約数ペア:

[(1, 28918980), (2, 14459490), (3, 9639660), (4, 7229745), (5, 5783796), (6, 4819830), (9, 3213220), (10, 2891898), (12, 2409915), (15, 1927932), (18, 1606610), (20, 1445949), (30, 963966), (36, 803305), (45, 642644), (60, 481983), (90, 321322), (180, 160661), (347, 83340), (463, 62460), (694, 41670), (926, 31230), (1041, 27780), (1388, 20835), (1389, 20820), (1735, 16668), (1852, 15615), (2082, 13890), (2315, 12492), (2778, 10410), (3123, 9260), (3470, 8334), (4164, 6945), (4167, 6940), (4630, 6246), (5205, 5556)]