21857940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9341}}^1$

素因数の和:9369

約数の個数: 72

約数和(自身を含む): 71410248

約数和(自身を除く): 49552308

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 9341, 18682, 28023, 37364, 46705, 56046, 84069, 93410, 112092, 121433, 140115, 168138, 186820, 242866, 280230, 336276, 364299, 420345, 485732, 560460, 607165, 728598, 840690, 1092897, 1214330, 1457196, 1681380, 1821495, 2185794, 2428660, 3642990, 4371588, 5464485, 7285980, 10928970, 21857940]

約数ペア:

[(1, 21857940), (2, 10928970), (3, 7285980), (4, 5464485), (5, 4371588), (6, 3642990), (9, 2428660), (10, 2185794), (12, 1821495), (13, 1681380), (15, 1457196), (18, 1214330), (20, 1092897), (26, 840690), (30, 728598), (36, 607165), (39, 560460), (45, 485732), (52, 420345), (60, 364299), (65, 336276), (78, 280230), (90, 242866), (117, 186820), (130, 168138), (156, 140115), (180, 121433), (195, 112092), (234, 93410), (260, 84069), (390, 56046), (468, 46705), (585, 37364), (780, 28023), (1170, 18682), (2340, 9341)]