20287440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1483}}^1$

素因数の和:1521

約数の個数: 120

約数和(自身を含む): 71766240

約数和(自身を除く): 51478800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 114, 120, 144, 152, 171, 180, 190, 228, 240, 285, 304, 342, 360, 380, 456, 570, 684, 720, 760, 855, 912, 1140, 1368, 1483, 1520, 1710, 2280, 2736, 2966, 3420, 4449, 4560, 5932, 6840, 7415, 8898, 11864, 13347, 13680, 14830, 17796, 22245, 23728, 26694, 28177, 29660, 35592, 44490, 53388, 56354, 59320, 66735, 71184, 84531, 88980, 106776, 112708, 118640, 133470, 140885, 169062, 177960, 213552, 225416, 253593, 266940, 281770, 338124, 355920, 422655, 450832, 507186, 533880, 563540, 676248, 845310, 1014372, 1067760, 1127080, 1267965, 1352496, 1690620, 2028744, 2254160, 2535930, 3381240, 4057488, 5071860, 6762480, 10143720, 20287440]

約数ペア:

[(1, 20287440), (2, 10143720), (3, 6762480), (4, 5071860), (5, 4057488), (6, 3381240), (8, 2535930), (9, 2254160), (10, 2028744), (12, 1690620), (15, 1352496), (16, 1267965), (18, 1127080), (19, 1067760), (20, 1014372), (24, 845310), (30, 676248), (36, 563540), (38, 533880), (40, 507186), (45, 450832), (48, 422655), (57, 355920), (60, 338124), (72, 281770), (76, 266940), (80, 253593), (90, 225416), (95, 213552), (114, 177960), (120, 169062), (144, 140885), (152, 133470), (171, 118640), (180, 112708), (190, 106776), (228, 88980), (240, 84531), (285, 71184), (304, 66735), (342, 59320), (360, 56354), (380, 53388), (456, 44490), (570, 35592), (684, 29660), (720, 28177), (760, 26694), (855, 23728), (912, 22245), (1140, 17796), (1368, 14830), (1483, 13680), (1520, 13347), (1710, 11864), (2280, 8898), (2736, 7415), (2966, 6840), (3420, 5932), (4449, 4560)]