20357964

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{509}}^1$

素因数の和:631

約数の個数: 72

約数和(自身を含む): 56805840

約数和(自身を除く): 36447876

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 101, 132, 198, 202, 303, 396, 404, 509, 606, 909, 1018, 1111, 1212, 1527, 1818, 2036, 2222, 3054, 3333, 3636, 4444, 4581, 5599, 6108, 6666, 9162, 9999, 11198, 13332, 16797, 18324, 19998, 22396, 33594, 39996, 50391, 51409, 67188, 100782, 102818, 154227, 201564, 205636, 308454, 462681, 565499, 616908, 925362, 1130998, 1696497, 1850724, 2261996, 3392994, 5089491, 6785988, 10178982, 20357964]

約数ペア:

[(1, 20357964), (2, 10178982), (3, 6785988), (4, 5089491), (6, 3392994), (9, 2261996), (11, 1850724), (12, 1696497), (18, 1130998), (22, 925362), (33, 616908), (36, 565499), (44, 462681), (66, 308454), (99, 205636), (101, 201564), (132, 154227), (198, 102818), (202, 100782), (303, 67188), (396, 51409), (404, 50391), (509, 39996), (606, 33594), (909, 22396), (1018, 19998), (1111, 18324), (1212, 16797), (1527, 13332), (1818, 11198), (2036, 9999), (2222, 9162), (3054, 6666), (3333, 6108), (3636, 5599), (4444, 4581)]