20456350

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{353}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 40823280

約数和(自身を除く): 20366930

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 61, 95, 122, 190, 305, 353, 475, 610, 706, 950, 1159, 1525, 1765, 2318, 3050, 3530, 5795, 6707, 8825, 11590, 13414, 17650, 21533, 28975, 33535, 43066, 57950, 67070, 107665, 167675, 215330, 335350, 409127, 538325, 818254, 1076650, 2045635, 4091270, 10228175, 20456350]

約数ペア:

[(1, 20456350), (2, 10228175), (5, 4091270), (10, 2045635), (19, 1076650), (25, 818254), (38, 538325), (50, 409127), (61, 335350), (95, 215330), (122, 167675), (190, 107665), (305, 67070), (353, 57950), (475, 43066), (610, 33535), (706, 28975), (950, 21533), (1159, 17650), (1525, 13414), (1765, 11590), (2318, 8825), (3050, 6707), (3530, 5795)]