21925240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1697}}^1$

素因数の和:1744

約数の個数: 64

約数和(自身を含む): 55015200

約数和(自身を除く): 33089960

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1615, 1697, 2584, 3230, 3394, 6460, 6788, 8485, 12920, 13576, 16970, 28849, 32243, 33940, 57698, 64486, 67880, 115396, 128972, 144245, 161215, 230792, 257944, 288490, 322430, 548131, 576980, 644860, 1096262, 1153960, 1289720, 2192524, 2740655, 4385048, 5481310, 10962620, 21925240]

約数ペア:

[(1, 21925240), (2, 10962620), (4, 5481310), (5, 4385048), (8, 2740655), (10, 2192524), (17, 1289720), (19, 1153960), (20, 1096262), (34, 644860), (38, 576980), (40, 548131), (68, 322430), (76, 288490), (85, 257944), (95, 230792), (136, 161215), (152, 144245), (170, 128972), (190, 115396), (323, 67880), (340, 64486), (380, 57698), (646, 33940), (680, 32243), (760, 28849), (1292, 16970), (1615, 13576), (1697, 12920), (2584, 8485), (3230, 6788), (3394, 6460)]