21225700

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 48996864

約数和(自身を除く): 27771164

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 41, 50, 62, 82, 100, 124, 155, 164, 167, 205, 310, 334, 410, 620, 668, 775, 820, 835, 1025, 1271, 1550, 1670, 2050, 2542, 3100, 3340, 4100, 4175, 5084, 5177, 6355, 6847, 8350, 10354, 12710, 13694, 16700, 20708, 25420, 25885, 27388, 31775, 34235, 51770, 63550, 68470, 103540, 127100, 129425, 136940, 171175, 212257, 258850, 342350, 424514, 517700, 684700, 849028, 1061285, 2122570, 4245140, 5306425, 10612850, 21225700]

約数ペア:

[(1, 21225700), (2, 10612850), (4, 5306425), (5, 4245140), (10, 2122570), (20, 1061285), (25, 849028), (31, 684700), (41, 517700), (50, 424514), (62, 342350), (82, 258850), (100, 212257), (124, 171175), (155, 136940), (164, 129425), (167, 127100), (205, 103540), (310, 68470), (334, 63550), (410, 51770), (620, 34235), (668, 31775), (775, 27388), (820, 25885), (835, 25420), (1025, 20708), (1271, 16700), (1550, 13694), (1670, 12710), (2050, 10354), (2542, 8350), (3100, 6847), (3340, 6355), (4100, 5177), (4175, 5084)]