20535840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1097}}^1$

素因数の和:1131

約数の個数: 144

約数和(自身を含む): 75538008

約数和(自身を除く): 55002168

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 936, 1040, 1097, 1170, 1248, 1440, 1560, 1872, 2080, 2194, 2340, 3120, 3291, 3744, 4388, 4680, 5485, 6240, 6582, 8776, 9360, 9873, 10970, 13164, 14261, 16455, 17552, 18720, 19746, 21940, 26328, 28522, 32910, 35104, 39492, 42783, 43880, 49365, 52656, 57044, 65820, 71305, 78984, 85566, 87760, 98730, 105312, 114088, 128349, 131640, 142610, 157968, 171132, 175520, 197460, 213915, 228176, 256698, 263280, 285220, 315936, 342264, 394920, 427830, 456352, 513396, 526560, 570440, 641745, 684528, 789840, 855660, 1026792, 1140880, 1283490, 1369056, 1579680, 1711320, 2053584, 2281760, 2566980, 3422640, 4107168, 5133960, 6845280, 10267920, 20535840]

約数ペア:

[(1, 20535840), (2, 10267920), (3, 6845280), (4, 5133960), (5, 4107168), (6, 3422640), (8, 2566980), (9, 2281760), (10, 2053584), (12, 1711320), (13, 1579680), (15, 1369056), (16, 1283490), (18, 1140880), (20, 1026792), (24, 855660), (26, 789840), (30, 684528), (32, 641745), (36, 570440), (39, 526560), (40, 513396), (45, 456352), (48, 427830), (52, 394920), (60, 342264), (65, 315936), (72, 285220), (78, 263280), (80, 256698), (90, 228176), (96, 213915), (104, 197460), (117, 175520), (120, 171132), (130, 157968), (144, 142610), (156, 131640), (160, 128349), (180, 114088), (195, 105312), (208, 98730), (234, 87760), (240, 85566), (260, 78984), (288, 71305), (312, 65820), (360, 57044), (390, 52656), (416, 49365), (468, 43880), (480, 42783), (520, 39492), (585, 35104), (624, 32910), (720, 28522), (780, 26328), (936, 21940), (1040, 19746), (1097, 18720), (1170, 17552), (1248, 16455), (1440, 14261), (1560, 13164), (1872, 10970), (2080, 9873), (2194, 9360), (2340, 8776), (3120, 6582), (3291, 6240), (3744, 5485), (4388, 4680)]