21652020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{487}}^1$

素因数の和:534

約数の個数: 144

約数和(自身を含む): 74605440

約数和(自身を除く): 52953420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 468, 487, 494, 570, 585, 684, 741, 780, 855, 974, 988, 1140, 1170, 1235, 1461, 1482, 1710, 1948, 2223, 2340, 2435, 2470, 2922, 2964, 3420, 3705, 4383, 4446, 4870, 4940, 5844, 6331, 7305, 7410, 8766, 8892, 9253, 9740, 11115, 12662, 14610, 14820, 17532, 18506, 18993, 21915, 22230, 25324, 27759, 29220, 31655, 37012, 37986, 43830, 44460, 46265, 55518, 56979, 63310, 75972, 83277, 87660, 92530, 94965, 111036, 113958, 120289, 126620, 138795, 166554, 185060, 189930, 227916, 240578, 277590, 284895, 333108, 360867, 379860, 416385, 481156, 555180, 569790, 601445, 721734, 832770, 1082601, 1139580, 1202890, 1443468, 1665540, 1804335, 2165202, 2405780, 3608670, 4330404, 5413005, 7217340, 10826010, 21652020]

約数ペア:

[(1, 21652020), (2, 10826010), (3, 7217340), (4, 5413005), (5, 4330404), (6, 3608670), (9, 2405780), (10, 2165202), (12, 1804335), (13, 1665540), (15, 1443468), (18, 1202890), (19, 1139580), (20, 1082601), (26, 832770), (30, 721734), (36, 601445), (38, 569790), (39, 555180), (45, 481156), (52, 416385), (57, 379860), (60, 360867), (65, 333108), (76, 284895), (78, 277590), (90, 240578), (95, 227916), (114, 189930), (117, 185060), (130, 166554), (156, 138795), (171, 126620), (180, 120289), (190, 113958), (195, 111036), (228, 94965), (234, 92530), (247, 87660), (260, 83277), (285, 75972), (342, 63310), (380, 56979), (390, 55518), (468, 46265), (487, 44460), (494, 43830), (570, 37986), (585, 37012), (684, 31655), (741, 29220), (780, 27759), (855, 25324), (974, 22230), (988, 21915), (1140, 18993), (1170, 18506), (1235, 17532), (1461, 14820), (1482, 14610), (1710, 12662), (1948, 11115), (2223, 9740), (2340, 9253), (2435, 8892), (2470, 8766), (2922, 7410), (2964, 7305), (3420, 6331), (3705, 5844), (4383, 4940), (4446, 4870)]