20784860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{659}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 25784740

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 83, 95, 166, 190, 332, 380, 415, 659, 830, 1318, 1577, 1660, 2636, 3154, 3295, 6308, 6590, 7885, 12521, 13180, 15770, 25042, 31540, 50084, 54697, 62605, 109394, 125210, 218788, 250420, 273485, 546970, 1039243, 1093940, 2078486, 4156972, 5196215, 10392430, 20784860]

約数ペア:

[(1, 20784860), (2, 10392430), (4, 5196215), (5, 4156972), (10, 2078486), (19, 1093940), (20, 1039243), (38, 546970), (76, 273485), (83, 250420), (95, 218788), (166, 125210), (190, 109394), (332, 62605), (380, 54697), (415, 50084), (659, 31540), (830, 25042), (1318, 15770), (1577, 13180), (1660, 12521), (2636, 7885), (3154, 6590), (3295, 6308)]