21392700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:252

約数の個数: 144

約数和(自身を含む): 72328704

約数和(自身を除く): 50936004

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 61, 70, 75, 84, 100, 105, 122, 140, 150, 167, 175, 183, 210, 244, 300, 305, 334, 350, 366, 420, 427, 501, 525, 610, 668, 700, 732, 835, 854, 915, 1002, 1050, 1169, 1220, 1281, 1525, 1670, 1708, 1830, 2004, 2100, 2135, 2338, 2505, 2562, 3050, 3340, 3507, 3660, 4175, 4270, 4575, 4676, 5010, 5124, 5845, 6100, 6405, 7014, 8350, 8540, 9150, 10020, 10187, 10675, 11690, 12525, 12810, 14028, 16700, 17535, 18300, 20374, 21350, 23380, 25050, 25620, 29225, 30561, 32025, 35070, 40748, 42700, 50100, 50935, 58450, 61122, 64050, 70140, 71309, 87675, 101870, 116900, 122244, 128100, 142618, 152805, 175350, 203740, 213927, 254675, 285236, 305610, 350700, 356545, 427854, 509350, 611220, 713090, 764025, 855708, 1018700, 1069635, 1426180, 1528050, 1782725, 2139270, 3056100, 3565450, 4278540, 5348175, 7130900, 10696350, 21392700]

約数ペア:

[(1, 21392700), (2, 10696350), (3, 7130900), (4, 5348175), (5, 4278540), (6, 3565450), (7, 3056100), (10, 2139270), (12, 1782725), (14, 1528050), (15, 1426180), (20, 1069635), (21, 1018700), (25, 855708), (28, 764025), (30, 713090), (35, 611220), (42, 509350), (50, 427854), (60, 356545), (61, 350700), (70, 305610), (75, 285236), (84, 254675), (100, 213927), (105, 203740), (122, 175350), (140, 152805), (150, 142618), (167, 128100), (175, 122244), (183, 116900), (210, 101870), (244, 87675), (300, 71309), (305, 70140), (334, 64050), (350, 61122), (366, 58450), (420, 50935), (427, 50100), (501, 42700), (525, 40748), (610, 35070), (668, 32025), (700, 30561), (732, 29225), (835, 25620), (854, 25050), (915, 23380), (1002, 21350), (1050, 20374), (1169, 18300), (1220, 17535), (1281, 16700), (1525, 14028), (1670, 12810), (1708, 12525), (1830, 11690), (2004, 10675), (2100, 10187), (2135, 10020), (2338, 9150), (2505, 8540), (2562, 8350), (3050, 7014), (3340, 6405), (3507, 6100), (3660, 5845), (4175, 5124), (4270, 5010), (4575, 4676)]