21290040

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{6571}}^1$

素因数の和:6594

約数の個数: 80

約数和(自身を含む): 71569080

約数和(自身を除く): 50279040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240, 6571, 13142, 19713, 26284, 32855, 39426, 52568, 59139, 65710, 78852, 98565, 118278, 131420, 157704, 177417, 197130, 236556, 262840, 295695, 354834, 394260, 473112, 532251, 591390, 709668, 788520, 887085, 1064502, 1182780, 1419336, 1774170, 2129004, 2365560, 2661255, 3548340, 4258008, 5322510, 7096680, 10645020, 21290040]

約数ペア:

[(1, 21290040), (2, 10645020), (3, 7096680), (4, 5322510), (5, 4258008), (6, 3548340), (8, 2661255), (9, 2365560), (10, 2129004), (12, 1774170), (15, 1419336), (18, 1182780), (20, 1064502), (24, 887085), (27, 788520), (30, 709668), (36, 591390), (40, 532251), (45, 473112), (54, 394260), (60, 354834), (72, 295695), (81, 262840), (90, 236556), (108, 197130), (120, 177417), (135, 157704), (162, 131420), (180, 118278), (216, 98565), (270, 78852), (324, 65710), (360, 59139), (405, 52568), (540, 39426), (648, 32855), (810, 26284), (1080, 19713), (1620, 13142), (3240, 6571)]