21330170

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{829}}^1$

素因数の和:950

約数の個数: 32

約数和(自身を含む): 40158720

約数和(自身を除く): 18828550

約数列:

[1, 2, 5, 10, 31, 62, 83, 155, 166, 310, 415, 829, 830, 1658, 2573, 4145, 5146, 8290, 12865, 25699, 25730, 51398, 68807, 128495, 137614, 256990, 344035, 688070, 2133017, 4266034, 10665085, 21330170]

約数ペア:

[(1, 21330170), (2, 10665085), (5, 4266034), (10, 2133017), (31, 688070), (62, 344035), (83, 256990), (155, 137614), (166, 128495), (310, 68807), (415, 51398), (829, 25730), (830, 25699), (1658, 12865), (2573, 8290), (4145, 5146)]