18409040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:628

約数の個数: 80

約数和(自身を含む): 47663616

約数和(自身を除く): 29254576

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 571, 620, 806, 1040, 1142, 1240, 1612, 2015, 2284, 2480, 2855, 3224, 4030, 4568, 5710, 6448, 7423, 8060, 9136, 11420, 14846, 16120, 17701, 22840, 29692, 32240, 35402, 37115, 45680, 59384, 70804, 74230, 88505, 118768, 141608, 148460, 177010, 230113, 283216, 296920, 354020, 460226, 593840, 708040, 920452, 1150565, 1416080, 1840904, 2301130, 3681808, 4602260, 9204520, 18409040]

約数ペア:

[(1, 18409040), (2, 9204520), (4, 4602260), (5, 3681808), (8, 2301130), (10, 1840904), (13, 1416080), (16, 1150565), (20, 920452), (26, 708040), (31, 593840), (40, 460226), (52, 354020), (62, 296920), (65, 283216), (80, 230113), (104, 177010), (124, 148460), (130, 141608), (155, 118768), (208, 88505), (248, 74230), (260, 70804), (310, 59384), (403, 45680), (496, 37115), (520, 35402), (571, 32240), (620, 29692), (806, 22840), (1040, 17701), (1142, 16120), (1240, 14846), (1612, 11420), (2015, 9136), (2284, 8060), (2480, 7423), (2855, 6448), (3224, 5710), (4030, 4568)]