20942940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18371}}^1$

素因数の和:18402

約数の個数: 48

約数和(自身を含む): 61729920

約数和(自身を除く): 40786980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 18371, 36742, 55113, 73484, 91855, 110226, 183710, 220452, 275565, 349049, 367420, 551130, 698098, 1047147, 1102260, 1396196, 1745245, 2094294, 3490490, 4188588, 5235735, 6980980, 10471470, 20942940]

約数ペア:

[(1, 20942940), (2, 10471470), (3, 6980980), (4, 5235735), (5, 4188588), (6, 3490490), (10, 2094294), (12, 1745245), (15, 1396196), (19, 1102260), (20, 1047147), (30, 698098), (38, 551130), (57, 367420), (60, 349049), (76, 275565), (95, 220452), (114, 183710), (190, 110226), (228, 91855), (285, 73484), (380, 55113), (570, 36742), (1140, 18371)]