21955450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:244

約数の個数: 72

約数和(自身を含む): 47496960

約数和(自身を除く): 25541510

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 121, 190, 191, 209, 242, 275, 382, 418, 475, 550, 605, 950, 955, 1045, 1210, 1910, 2090, 2101, 2299, 3025, 3629, 4202, 4598, 4775, 5225, 6050, 7258, 9550, 10450, 10505, 11495, 18145, 21010, 22990, 23111, 36290, 39919, 46222, 52525, 57475, 79838, 90725, 105050, 114950, 115555, 181450, 199595, 231110, 399190, 439109, 577775, 878218, 997975, 1155550, 1995950, 2195545, 4391090, 10977725, 21955450]

約数ペア:

[(1, 21955450), (2, 10977725), (5, 4391090), (10, 2195545), (11, 1995950), (19, 1155550), (22, 997975), (25, 878218), (38, 577775), (50, 439109), (55, 399190), (95, 231110), (110, 199595), (121, 181450), (190, 115555), (191, 114950), (209, 105050), (242, 90725), (275, 79838), (382, 57475), (418, 52525), (475, 46222), (550, 39919), (605, 36290), (950, 23111), (955, 22990), (1045, 21010), (1210, 18145), (1910, 11495), (2090, 10505), (2101, 10450), (2299, 9550), (3025, 7258), (3629, 6050), (4202, 5225), (4598, 4775)]