21284940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18671}}^1$

素因数の和:18702

約数の個数: 48

約数和(自身を含む): 62737920

約数和(自身を除く): 41452980

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, 18671, 37342, 56013, 74684, 93355, 112026, 186710, 224052, 280065, 354749, 373420, 560130, 709498, 1064247, 1120260, 1418996, 1773745, 2128494, 3547490, 4256988, 5321235, 7094980, 10642470, 21284940]

約数ペア:

[(1, 21284940), (2, 10642470), (3, 7094980), (4, 5321235), (5, 4256988), (6, 3547490), (10, 2128494), (12, 1773745), (15, 1418996), (19, 1120260), (20, 1064247), (30, 709498), (38, 560130), (57, 373420), (60, 354749), (76, 280065), (95, 224052), (114, 186710), (190, 112026), (228, 93355), (285, 74684), (380, 56013), (570, 37342), (1140, 18671)]