21769840

素因数分解:

$2^4\times 5^1\times {\mathrm{503}}^1\times {\mathrm{541}}^1$

素因数の和:1057

約数の個数: 40

約数和(自身を含む): 50809248

約数和(自身を除く): 29039408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 503, 541, 1006, 1082, 2012, 2164, 2515, 2705, 4024, 4328, 5030, 5410, 8048, 8656, 10060, 10820, 20120, 21640, 40240, 43280, 272123, 544246, 1088492, 1360615, 2176984, 2721230, 4353968, 5442460, 10884920, 21769840]

約数ペア:

[(1, 21769840), (2, 10884920), (4, 5442460), (5, 4353968), (8, 2721230), (10, 2176984), (16, 1360615), (20, 1088492), (40, 544246), (80, 272123), (503, 43280), (541, 40240), (1006, 21640), (1082, 20120), (2012, 10820), (2164, 10060), (2515, 8656), (2705, 8048), (4024, 5410), (4328, 5030)]