20393520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:283

約数の個数: 160

約数和(自身を含む): 73804800

約数和(自身を除く): 53411280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 61, 70, 80, 84, 105, 112, 120, 122, 140, 168, 183, 199, 210, 240, 244, 280, 305, 336, 366, 398, 420, 427, 488, 560, 597, 610, 732, 796, 840, 854, 915, 976, 995, 1194, 1220, 1281, 1393, 1464, 1592, 1680, 1708, 1830, 1990, 2135, 2388, 2440, 2562, 2786, 2928, 2985, 3184, 3416, 3660, 3980, 4179, 4270, 4776, 4880, 5124, 5572, 5970, 6405, 6832, 6965, 7320, 7960, 8358, 8540, 9552, 10248, 11144, 11940, 12139, 12810, 13930, 14640, 15920, 16716, 17080, 20496, 20895, 22288, 23880, 24278, 25620, 27860, 33432, 34160, 36417, 41790, 47760, 48556, 51240, 55720, 60695, 66864, 72834, 83580, 84973, 97112, 102480, 111440, 121390, 145668, 167160, 169946, 182085, 194224, 242780, 254919, 291336, 334320, 339892, 364170, 424865, 485560, 509838, 582672, 679784, 728340, 849730, 971120, 1019676, 1274595, 1359568, 1456680, 1699460, 2039352, 2549190, 2913360, 3398920, 4078704, 5098380, 6797840, 10196760, 20393520]

約数ペア:

[(1, 20393520), (2, 10196760), (3, 6797840), (4, 5098380), (5, 4078704), (6, 3398920), (7, 2913360), (8, 2549190), (10, 2039352), (12, 1699460), (14, 1456680), (15, 1359568), (16, 1274595), (20, 1019676), (21, 971120), (24, 849730), (28, 728340), (30, 679784), (35, 582672), (40, 509838), (42, 485560), (48, 424865), (56, 364170), (60, 339892), (61, 334320), (70, 291336), (80, 254919), (84, 242780), (105, 194224), (112, 182085), (120, 169946), (122, 167160), (140, 145668), (168, 121390), (183, 111440), (199, 102480), (210, 97112), (240, 84973), (244, 83580), (280, 72834), (305, 66864), (336, 60695), (366, 55720), (398, 51240), (420, 48556), (427, 47760), (488, 41790), (560, 36417), (597, 34160), (610, 33432), (732, 27860), (796, 25620), (840, 24278), (854, 23880), (915, 22288), (976, 20895), (995, 20496), (1194, 17080), (1220, 16716), (1281, 15920), (1393, 14640), (1464, 13930), (1592, 12810), (1680, 12139), (1708, 11940), (1830, 11144), (1990, 10248), (2135, 9552), (2388, 8540), (2440, 8358), (2562, 7960), (2786, 7320), (2928, 6965), (2985, 6832), (3184, 6405), (3416, 5970), (3660, 5572), (3980, 5124), (4179, 4880), (4270, 4776)]