20891940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{5197}}^1$

素因数の和:5276

約数の個数: 48

約数和(自身を含む): 59381952

約数和(自身を除く): 38490012

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 67, 134, 201, 268, 335, 402, 670, 804, 1005, 1340, 2010, 4020, 5197, 10394, 15591, 20788, 25985, 31182, 51970, 62364, 77955, 103940, 155910, 311820, 348199, 696398, 1044597, 1392796, 1740995, 2089194, 3481990, 4178388, 5222985, 6963980, 10445970, 20891940]

約数ペア:

[(1, 20891940), (2, 10445970), (3, 6963980), (4, 5222985), (5, 4178388), (6, 3481990), (10, 2089194), (12, 1740995), (15, 1392796), (20, 1044597), (30, 696398), (60, 348199), (67, 311820), (134, 155910), (201, 103940), (268, 77955), (335, 62364), (402, 51970), (670, 31182), (804, 25985), (1005, 20788), (1340, 15591), (2010, 10394), (4020, 5197)]