644490

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1$

素因数の和:65

約数の個数: 128

約数和(自身を含む): 2211840

約数和(自身を除く): 1567350

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 27, 30, 31, 33, 35, 42, 45, 54, 55, 62, 63, 66, 70, 77, 90, 93, 99, 105, 110, 126, 135, 154, 155, 165, 186, 189, 198, 210, 217, 231, 270, 279, 297, 310, 315, 330, 341, 378, 385, 434, 462, 465, 495, 558, 594, 630, 651, 682, 693, 770, 837, 930, 945, 990, 1023, 1085, 1155, 1302, 1386, 1395, 1485, 1674, 1705, 1890, 1953, 2046, 2079, 2170, 2310, 2387, 2790, 2970, 3069, 3255, 3410, 3465, 3906, 4158, 4185, 4774, 5115, 5859, 6138, 6510, 6930, 7161, 8370, 9207, 9765, 10230, 10395, 11718, 11935, 14322, 15345, 18414, 19530, 20790, 21483, 23870, 29295, 30690, 35805, 42966, 46035, 58590, 64449, 71610, 92070, 107415, 128898, 214830, 322245, 644490]

約数ペア:

[(1, 644490), (2, 322245), (3, 214830), (5, 128898), (6, 107415), (7, 92070), (9, 71610), (10, 64449), (11, 58590), (14, 46035), (15, 42966), (18, 35805), (21, 30690), (22, 29295), (27, 23870), (30, 21483), (31, 20790), (33, 19530), (35, 18414), (42, 15345), (45, 14322), (54, 11935), (55, 11718), (62, 10395), (63, 10230), (66, 9765), (70, 9207), (77, 8370), (90, 7161), (93, 6930), (99, 6510), (105, 6138), (110, 5859), (126, 5115), (135, 4774), (154, 4185), (155, 4158), (165, 3906), (186, 3465), (189, 3410), (198, 3255), (210, 3069), (217, 2970), (231, 2790), (270, 2387), (279, 2310), (297, 2170), (310, 2079), (315, 2046), (330, 1953), (341, 1890), (378, 1705), (385, 1674), (434, 1485), (462, 1395), (465, 1386), (495, 1302), (558, 1155), (594, 1085), (630, 1023), (651, 990), (682, 945), (693, 930), (770, 837)]