20509300340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{914777}}^1$

素因数の和:914864

約数の個数: 48

約数和(自身を含む): 46104811200

約数和(自身を除く): 25595510860

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 590, 1121, 1180, 2242, 4484, 5605, 11210, 22420, 914777, 1829554, 3659108, 4573885, 9147770, 17380763, 18295540, 34761526, 53971843, 69523052, 86903815, 107943686, 173807630, 215887372, 269859215, 347615260, 539718430, 1025465017, 1079436860, 2050930034, 4101860068, 5127325085, 10254650170, 20509300340]

約数ペア:

[(1, 20509300340), (2, 10254650170), (4, 5127325085), (5, 4101860068), (10, 2050930034), (19, 1079436860), (20, 1025465017), (38, 539718430), (59, 347615260), (76, 269859215), (95, 215887372), (118, 173807630), (190, 107943686), (236, 86903815), (295, 69523052), (380, 53971843), (590, 34761526), (1121, 18295540), (1180, 17380763), (2242, 9147770), (4484, 4573885), (5605, 3659108), (11210, 1829554), (22420, 914777)]