20563920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^4$

素因数の和:71

約数の個数: 150

約数和(自身を含む): 74815338

約数和(自身を除く): 54251418

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 169, 180, 195, 208, 234, 240, 260, 312, 338, 360, 390, 468, 507, 520, 585, 624, 676, 720, 780, 845, 936, 1014, 1040, 1170, 1352, 1521, 1560, 1690, 1872, 2028, 2197, 2340, 2535, 2704, 3042, 3120, 3380, 4056, 4394, 4680, 5070, 6084, 6591, 6760, 7605, 8112, 8788, 9360, 10140, 10985, 12168, 13182, 13520, 15210, 17576, 19773, 20280, 21970, 24336, 26364, 28561, 30420, 32955, 35152, 39546, 40560, 43940, 52728, 57122, 60840, 65910, 79092, 85683, 87880, 98865, 105456, 114244, 121680, 131820, 142805, 158184, 171366, 175760, 197730, 228488, 257049, 263640, 285610, 316368, 342732, 395460, 428415, 456976, 514098, 527280, 571220, 685464, 790920, 856830, 1028196, 1142440, 1285245, 1370928, 1581840, 1713660, 2056392, 2284880, 2570490, 3427320, 4112784, 5140980, 6854640, 10281960, 20563920]

約数ペア:

[(1, 20563920), (2, 10281960), (3, 6854640), (4, 5140980), (5, 4112784), (6, 3427320), (8, 2570490), (9, 2284880), (10, 2056392), (12, 1713660), (13, 1581840), (15, 1370928), (16, 1285245), (18, 1142440), (20, 1028196), (24, 856830), (26, 790920), (30, 685464), (36, 571220), (39, 527280), (40, 514098), (45, 456976), (48, 428415), (52, 395460), (60, 342732), (65, 316368), (72, 285610), (78, 263640), (80, 257049), (90, 228488), (104, 197730), (117, 175760), (120, 171366), (130, 158184), (144, 142805), (156, 131820), (169, 121680), (180, 114244), (195, 105456), (208, 98865), (234, 87880), (240, 85683), (260, 79092), (312, 65910), (338, 60840), (360, 57122), (390, 52728), (468, 43940), (507, 40560), (520, 39546), (585, 35152), (624, 32955), (676, 30420), (720, 28561), (780, 26364), (845, 24336), (936, 21970), (1014, 20280), (1040, 19773), (1170, 17576), (1352, 15210), (1521, 13520), (1560, 13182), (1690, 12168), (1872, 10985), (2028, 10140), (2197, 9360), (2340, 8788), (2535, 8112), (2704, 7605), (3042, 6760), (3120, 6591), (3380, 6084), (4056, 5070), (4394, 4680)]