257378520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5023}}^1$

素因数の和:5105

約数の個数: 128

約数和(自身を含む): 897085440

約数和(自身を除く): 639706920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 61, 70, 84, 105, 120, 122, 140, 168, 183, 210, 244, 280, 305, 366, 420, 427, 488, 610, 732, 840, 854, 915, 1220, 1281, 1464, 1708, 1830, 2135, 2440, 2562, 3416, 3660, 4270, 5023, 5124, 6405, 7320, 8540, 10046, 10248, 12810, 15069, 17080, 20092, 25115, 25620, 30138, 35161, 40184, 50230, 51240, 60276, 70322, 75345, 100460, 105483, 120552, 140644, 150690, 175805, 200920, 210966, 281288, 301380, 306403, 351610, 421932, 527415, 602760, 612806, 703220, 843864, 919209, 1054830, 1225612, 1406440, 1532015, 1838418, 2109660, 2144821, 2451224, 3064030, 3676836, 4219320, 4289642, 4596045, 6128060, 6434463, 7353672, 8579284, 9192090, 10724105, 12256120, 12868926, 17158568, 18384180, 21448210, 25737852, 32172315, 36768360, 42896420, 51475704, 64344630, 85792840, 128689260, 257378520]

約数ペア:

[(1, 257378520), (2, 128689260), (3, 85792840), (4, 64344630), (5, 51475704), (6, 42896420), (7, 36768360), (8, 32172315), (10, 25737852), (12, 21448210), (14, 18384180), (15, 17158568), (20, 12868926), (21, 12256120), (24, 10724105), (28, 9192090), (30, 8579284), (35, 7353672), (40, 6434463), (42, 6128060), (56, 4596045), (60, 4289642), (61, 4219320), (70, 3676836), (84, 3064030), (105, 2451224), (120, 2144821), (122, 2109660), (140, 1838418), (168, 1532015), (183, 1406440), (210, 1225612), (244, 1054830), (280, 919209), (305, 843864), (366, 703220), (420, 612806), (427, 602760), (488, 527415), (610, 421932), (732, 351610), (840, 306403), (854, 301380), (915, 281288), (1220, 210966), (1281, 200920), (1464, 175805), (1708, 150690), (1830, 140644), (2135, 120552), (2440, 105483), (2562, 100460), (3416, 75345), (3660, 70322), (4270, 60276), (5023, 51240), (5124, 50230), (6405, 40184), (7320, 35161), (8540, 30138), (10046, 25620), (10248, 25115), (12810, 20092), (15069, 17080)]