20945220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{967}}^1$

素因数の和:1017

約数の個数: 72

約数和(自身を含む): 61959744

約数和(自身を除く): 41014524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 361, 380, 570, 722, 967, 1083, 1140, 1444, 1805, 1934, 2166, 2901, 3610, 3868, 4332, 4835, 5415, 5802, 7220, 9670, 10830, 11604, 14505, 18373, 19340, 21660, 29010, 36746, 55119, 58020, 73492, 91865, 110238, 183730, 220476, 275595, 349087, 367460, 551190, 698174, 1047261, 1102380, 1396348, 1745435, 2094522, 3490870, 4189044, 5236305, 6981740, 10472610, 20945220]

約数ペア:

[(1, 20945220), (2, 10472610), (3, 6981740), (4, 5236305), (5, 4189044), (6, 3490870), (10, 2094522), (12, 1745435), (15, 1396348), (19, 1102380), (20, 1047261), (30, 698174), (38, 551190), (57, 367460), (60, 349087), (76, 275595), (95, 220476), (114, 183730), (190, 110238), (228, 91865), (285, 73492), (361, 58020), (380, 55119), (570, 36746), (722, 29010), (967, 21660), (1083, 19340), (1140, 18373), (1444, 14505), (1805, 11604), (1934, 10830), (2166, 9670), (2901, 7220), (3610, 5802), (3868, 5415), (4332, 4835)]