20421780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{9199}}^1$

素因数の和:9248

約数の個数: 48

約数和(自身を含む): 58732800

約数和(自身を除く): 38311020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 370, 444, 555, 740, 1110, 2220, 9199, 18398, 27597, 36796, 45995, 55194, 91990, 110388, 137985, 183980, 275970, 340363, 551940, 680726, 1021089, 1361452, 1701815, 2042178, 3403630, 4084356, 5105445, 6807260, 10210890, 20421780]

約数ペア:

[(1, 20421780), (2, 10210890), (3, 6807260), (4, 5105445), (5, 4084356), (6, 3403630), (10, 2042178), (12, 1701815), (15, 1361452), (20, 1021089), (30, 680726), (37, 551940), (60, 340363), (74, 275970), (111, 183980), (148, 137985), (185, 110388), (222, 91990), (370, 55194), (444, 45995), (555, 36796), (740, 27597), (1110, 18398), (2220, 9199)]