280980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{223}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 978432

約数和(自身を除く): 697452

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 223, 252, 315, 420, 446, 630, 669, 892, 1115, 1260, 1338, 1561, 2007, 2230, 2676, 3122, 3345, 4014, 4460, 4683, 6244, 6690, 7805, 8028, 9366, 10035, 13380, 14049, 15610, 18732, 20070, 23415, 28098, 31220, 40140, 46830, 56196, 70245, 93660, 140490, 280980]

約数ペア:

[(1, 280980), (2, 140490), (3, 93660), (4, 70245), (5, 56196), (6, 46830), (7, 40140), (9, 31220), (10, 28098), (12, 23415), (14, 20070), (15, 18732), (18, 15610), (20, 14049), (21, 13380), (28, 10035), (30, 9366), (35, 8028), (36, 7805), (42, 6690), (45, 6244), (60, 4683), (63, 4460), (70, 4014), (84, 3345), (90, 3122), (105, 2676), (126, 2230), (140, 2007), (180, 1561), (210, 1338), (223, 1260), (252, 1115), (315, 892), (420, 669), (446, 630)]