20481360

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1399}}^1$

素因数の和:1476

約数の個数: 80

約数和(自身を含む): 64579200

約数和(自身を除く): 44097840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 80, 120, 122, 183, 240, 244, 305, 366, 488, 610, 732, 915, 976, 1220, 1399, 1464, 1830, 2440, 2798, 2928, 3660, 4197, 4880, 5596, 6995, 7320, 8394, 11192, 13990, 14640, 16788, 20985, 22384, 27980, 33576, 41970, 55960, 67152, 83940, 85339, 111920, 167880, 170678, 256017, 335760, 341356, 426695, 512034, 682712, 853390, 1024068, 1280085, 1365424, 1706780, 2048136, 2560170, 3413560, 4096272, 5120340, 6827120, 10240680, 20481360]

約数ペア:

[(1, 20481360), (2, 10240680), (3, 6827120), (4, 5120340), (5, 4096272), (6, 3413560), (8, 2560170), (10, 2048136), (12, 1706780), (15, 1365424), (16, 1280085), (20, 1024068), (24, 853390), (30, 682712), (40, 512034), (48, 426695), (60, 341356), (61, 335760), (80, 256017), (120, 170678), (122, 167880), (183, 111920), (240, 85339), (244, 83940), (305, 67152), (366, 55960), (488, 41970), (610, 33576), (732, 27980), (915, 22384), (976, 20985), (1220, 16788), (1399, 14640), (1464, 13990), (1830, 11192), (2440, 8394), (2798, 7320), (2928, 6995), (3660, 5596), (4197, 4880)]