81444220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28477}}^1$

素因数の和:28510

約数の個数: 48

約数和(自身を含む): 200940768

約数和(自身を除く): 119496548

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 28477, 56954, 113908, 142385, 284770, 313247, 370201, 569540, 626494, 740402, 1252988, 1480804, 1566235, 1851005, 3132470, 3702010, 4072211, 6264940, 7404020, 8144422, 16288844, 20361055, 40722110, 81444220]

約数ペア:

[(1, 81444220), (2, 40722110), (4, 20361055), (5, 16288844), (10, 8144422), (11, 7404020), (13, 6264940), (20, 4072211), (22, 3702010), (26, 3132470), (44, 1851005), (52, 1566235), (55, 1480804), (65, 1252988), (110, 740402), (130, 626494), (143, 569540), (220, 370201), (260, 313247), (286, 284770), (572, 142385), (715, 113908), (1430, 56954), (2860, 28477)]