81955920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1091}}^1$

素因数の和:1420

約数の個数: 80

約数和(自身を含む): 255108672

約数和(自身を除く): 173152752

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 313, 626, 939, 1091, 1252, 1565, 1878, 2182, 2504, 3130, 3273, 3756, 4364, 4695, 5008, 5455, 6260, 6546, 7512, 8728, 9390, 10910, 12520, 13092, 15024, 16365, 17456, 18780, 21820, 25040, 26184, 32730, 37560, 43640, 52368, 65460, 75120, 87280, 130920, 261840, 341483, 682966, 1024449, 1365932, 1707415, 2048898, 2731864, 3414830, 4097796, 5122245, 5463728, 6829660, 8195592, 10244490, 13659320, 16391184, 20488980, 27318640, 40977960, 81955920]

約数ペア:

[(1, 81955920), (2, 40977960), (3, 27318640), (4, 20488980), (5, 16391184), (6, 13659320), (8, 10244490), (10, 8195592), (12, 6829660), (15, 5463728), (16, 5122245), (20, 4097796), (24, 3414830), (30, 2731864), (40, 2048898), (48, 1707415), (60, 1365932), (80, 1024449), (120, 682966), (240, 341483), (313, 261840), (626, 130920), (939, 87280), (1091, 75120), (1252, 65460), (1565, 52368), (1878, 43640), (2182, 37560), (2504, 32730), (3130, 26184), (3273, 25040), (3756, 21820), (4364, 18780), (4695, 17456), (5008, 16365), (5455, 15024), (6260, 13092), (6546, 12520), (7512, 10910), (8728, 9390)]