20289152

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 44339400

約数和(自身を除く): 24050248

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 89, 104, 128, 137, 178, 208, 274, 356, 416, 548, 712, 832, 1096, 1157, 1424, 1664, 1781, 2192, 2314, 2848, 3562, 4384, 4628, 5696, 7124, 8768, 9256, 11392, 12193, 14248, 17536, 18512, 24386, 28496, 37024, 48772, 56992, 74048, 97544, 113984, 148096, 158509, 195088, 227968, 317018, 390176, 634036, 780352, 1268072, 1560704, 2536144, 5072288, 10144576, 20289152]

約数ペア:

[(1, 20289152), (2, 10144576), (4, 5072288), (8, 2536144), (13, 1560704), (16, 1268072), (26, 780352), (32, 634036), (52, 390176), (64, 317018), (89, 227968), (104, 195088), (128, 158509), (137, 148096), (178, 113984), (208, 97544), (274, 74048), (356, 56992), (416, 48772), (548, 37024), (712, 28496), (832, 24386), (1096, 18512), (1157, 17536), (1424, 14248), (1664, 12193), (1781, 11392), (2192, 9256), (2314, 8768), (2848, 7124), (3562, 5696), (4384, 4628)]