20804877275

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{23509}}^1$

素因数の和:23928

約数の個数: 48

約数和(自身を含む): 31834420800

約数和(自身を除く): 11029543525

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 389, 455, 1945, 2275, 2723, 5057, 9725, 13615, 23509, 25285, 35399, 68075, 117545, 126425, 164563, 176995, 305617, 587725, 822815, 884975, 1528085, 2139319, 4114075, 7640425, 9145001, 10696595, 45725005, 53482975, 64015007, 118885013, 228625025, 320075035, 594425065, 832195091, 1600375175, 2972125325, 4160975455, 20804877275]

約数ペア:

[(1, 20804877275), (5, 4160975455), (7, 2972125325), (13, 1600375175), (25, 832195091), (35, 594425065), (65, 320075035), (91, 228625025), (175, 118885013), (325, 64015007), (389, 53482975), (455, 45725005), (1945, 10696595), (2275, 9145001), (2723, 7640425), (5057, 4114075), (9725, 2139319), (13615, 1528085), (23509, 884975), (25285, 822815), (35399, 587725), (68075, 305617), (117545, 176995), (126425, 164563)]