405840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:124

約数の個数: 80

約数和(自身を含む): 1339200

約数和(自身を除く): 933360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 89, 95, 114, 120, 152, 178, 190, 228, 240, 267, 285, 304, 356, 380, 445, 456, 534, 570, 712, 760, 890, 912, 1068, 1140, 1335, 1424, 1520, 1691, 1780, 2136, 2280, 2670, 3382, 3560, 4272, 4560, 5073, 5340, 6764, 7120, 8455, 10146, 10680, 13528, 16910, 20292, 21360, 25365, 27056, 33820, 40584, 50730, 67640, 81168, 101460, 135280, 202920, 405840]

約数ペア:

[(1, 405840), (2, 202920), (3, 135280), (4, 101460), (5, 81168), (6, 67640), (8, 50730), (10, 40584), (12, 33820), (15, 27056), (16, 25365), (19, 21360), (20, 20292), (24, 16910), (30, 13528), (38, 10680), (40, 10146), (48, 8455), (57, 7120), (60, 6764), (76, 5340), (80, 5073), (89, 4560), (95, 4272), (114, 3560), (120, 3382), (152, 2670), (178, 2280), (190, 2136), (228, 1780), (240, 1691), (267, 1520), (285, 1424), (304, 1335), (356, 1140), (380, 1068), (445, 912), (456, 890), (534, 760), (570, 712)]