21571700

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 49871808

約数和(自身を除く): 28300108

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 83, 92, 100, 113, 115, 166, 226, 230, 332, 415, 452, 460, 565, 575, 830, 1130, 1150, 1660, 1909, 2075, 2260, 2300, 2599, 2825, 3818, 4150, 5198, 5650, 7636, 8300, 9379, 9545, 10396, 11300, 12995, 18758, 19090, 25990, 37516, 38180, 46895, 47725, 51980, 64975, 93790, 95450, 129950, 187580, 190900, 215717, 234475, 259900, 431434, 468950, 862868, 937900, 1078585, 2157170, 4314340, 5392925, 10785850, 21571700]

約数ペア:

[(1, 21571700), (2, 10785850), (4, 5392925), (5, 4314340), (10, 2157170), (20, 1078585), (23, 937900), (25, 862868), (46, 468950), (50, 431434), (83, 259900), (92, 234475), (100, 215717), (113, 190900), (115, 187580), (166, 129950), (226, 95450), (230, 93790), (332, 64975), (415, 51980), (452, 47725), (460, 46895), (565, 38180), (575, 37516), (830, 25990), (1130, 19090), (1150, 18758), (1660, 12995), (1909, 11300), (2075, 10396), (2260, 9545), (2300, 9379), (2599, 8300), (2825, 7636), (3818, 5650), (4150, 5198)]