21055580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{503}}^1$

素因数の和:555

約数の個数: 96

約数和(自身を含む): 56899584

約数和(自身を除く): 35844004

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 23, 26, 28, 35, 46, 52, 65, 70, 91, 92, 115, 130, 140, 161, 182, 230, 260, 299, 322, 364, 455, 460, 503, 598, 644, 805, 910, 1006, 1196, 1495, 1610, 1820, 2012, 2093, 2515, 2990, 3220, 3521, 4186, 5030, 5980, 6539, 7042, 8372, 10060, 10465, 11569, 13078, 14084, 17605, 20930, 23138, 26156, 32695, 35210, 41860, 45773, 46276, 57845, 65390, 70420, 80983, 91546, 115690, 130780, 150397, 161966, 183092, 228865, 231380, 300794, 323932, 404915, 457730, 601588, 751985, 809830, 915460, 1052779, 1503970, 1619660, 2105558, 3007940, 4211116, 5263895, 10527790, 21055580]

約数ペア:

[(1, 21055580), (2, 10527790), (4, 5263895), (5, 4211116), (7, 3007940), (10, 2105558), (13, 1619660), (14, 1503970), (20, 1052779), (23, 915460), (26, 809830), (28, 751985), (35, 601588), (46, 457730), (52, 404915), (65, 323932), (70, 300794), (91, 231380), (92, 228865), (115, 183092), (130, 161966), (140, 150397), (161, 130780), (182, 115690), (230, 91546), (260, 80983), (299, 70420), (322, 65390), (364, 57845), (455, 46276), (460, 45773), (503, 41860), (598, 35210), (644, 32695), (805, 26156), (910, 23138), (1006, 20930), (1196, 17605), (1495, 14084), (1610, 13078), (1820, 11569), (2012, 10465), (2093, 10060), (2515, 8372), (2990, 7042), (3220, 6539), (3521, 5980), (4186, 5030)]