18900945

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:196

約数の個数: 80

約数和(自身を含む): 39726720

約数和(自身を除く): 20825775

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 59, 63, 81, 105, 113, 135, 177, 189, 295, 315, 339, 405, 413, 531, 565, 567, 791, 885, 945, 1017, 1239, 1593, 1695, 2065, 2373, 2655, 2835, 3051, 3717, 3955, 4779, 5085, 6195, 6667, 7119, 7965, 9153, 11151, 11865, 15255, 18585, 20001, 21357, 23895, 33335, 33453, 35595, 45765, 46669, 55755, 60003, 64071, 100005, 106785, 140007, 167265, 180009, 233345, 300015, 320355, 420021, 540027, 700035, 900045, 1260063, 2100105, 2700135, 3780189, 6300315, 18900945]

約数ペア:

[(1, 18900945), (3, 6300315), (5, 3780189), (7, 2700135), (9, 2100105), (15, 1260063), (21, 900045), (27, 700035), (35, 540027), (45, 420021), (59, 320355), (63, 300015), (81, 233345), (105, 180009), (113, 167265), (135, 140007), (177, 106785), (189, 100005), (295, 64071), (315, 60003), (339, 55755), (405, 46669), (413, 45765), (531, 35595), (565, 33453), (567, 33335), (791, 23895), (885, 21357), (945, 20001), (1017, 18585), (1239, 15255), (1593, 11865), (1695, 11151), (2065, 9153), (2373, 7965), (2655, 7119), (2835, 6667), (3051, 6195), (3717, 5085), (3955, 4779)]