19659825

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:199

約数の個数: 72

約数和(自身を含む): 38301120

約数和(自身を除く): 18641295

約数列:

[1, 3, 5, 9, 15, 23, 25, 29, 45, 69, 75, 87, 115, 131, 145, 207, 225, 261, 345, 393, 435, 575, 655, 667, 725, 1035, 1179, 1305, 1725, 1965, 2001, 2175, 3013, 3275, 3335, 3799, 5175, 5895, 6003, 6525, 9039, 9825, 10005, 11397, 15065, 16675, 18995, 27117, 29475, 30015, 34191, 45195, 50025, 56985, 75325, 87377, 94975, 135585, 150075, 170955, 225975, 262131, 284925, 436885, 677925, 786393, 854775, 1310655, 2184425, 3931965, 6553275, 19659825]

約数ペア:

[(1, 19659825), (3, 6553275), (5, 3931965), (9, 2184425), (15, 1310655), (23, 854775), (25, 786393), (29, 677925), (45, 436885), (69, 284925), (75, 262131), (87, 225975), (115, 170955), (131, 150075), (145, 135585), (207, 94975), (225, 87377), (261, 75325), (345, 56985), (393, 50025), (435, 45195), (575, 34191), (655, 30015), (667, 29475), (725, 27117), (1035, 18995), (1179, 16675), (1305, 15065), (1725, 11397), (1965, 10005), (2001, 9825), (2175, 9039), (3013, 6525), (3275, 6003), (3335, 5895), (3799, 5175)]