81621720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{11933}}^1$

素因数の和:11969

約数の個数: 96

約数和(自身を含む): 279255600

約数和(自身を除く): 197633880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 57, 60, 72, 76, 90, 95, 114, 120, 152, 171, 180, 190, 228, 285, 342, 360, 380, 456, 570, 684, 760, 855, 1140, 1368, 1710, 2280, 3420, 6840, 11933, 23866, 35799, 47732, 59665, 71598, 95464, 107397, 119330, 143196, 178995, 214794, 226727, 238660, 286392, 357990, 429588, 453454, 477320, 536985, 680181, 715980, 859176, 906908, 1073970, 1133635, 1360362, 1431960, 1813816, 2040543, 2147940, 2267270, 2720724, 3400905, 4081086, 4295880, 4534540, 5441448, 6801810, 8162172, 9069080, 10202715, 13603620, 16324344, 20405430, 27207240, 40810860, 81621720]

約数ペア:

[(1, 81621720), (2, 40810860), (3, 27207240), (4, 20405430), (5, 16324344), (6, 13603620), (8, 10202715), (9, 9069080), (10, 8162172), (12, 6801810), (15, 5441448), (18, 4534540), (19, 4295880), (20, 4081086), (24, 3400905), (30, 2720724), (36, 2267270), (38, 2147940), (40, 2040543), (45, 1813816), (57, 1431960), (60, 1360362), (72, 1133635), (76, 1073970), (90, 906908), (95, 859176), (114, 715980), (120, 680181), (152, 536985), (171, 477320), (180, 453454), (190, 429588), (228, 357990), (285, 286392), (342, 238660), (360, 226727), (380, 214794), (456, 178995), (570, 143196), (684, 119330), (760, 107397), (855, 95464), (1140, 71598), (1368, 59665), (1710, 47732), (2280, 35799), (3420, 23866), (6840, 11933)]