77773780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1301}}^1$

素因数の和:1385

約数の個数: 72

約数和(自身を含む): 193253256

約数和(自身を除く): 115479476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 140, 196, 244, 245, 305, 427, 490, 610, 854, 980, 1220, 1301, 1708, 2135, 2602, 2989, 4270, 5204, 5978, 6505, 8540, 9107, 11956, 13010, 14945, 18214, 26020, 29890, 36428, 45535, 59780, 63749, 79361, 91070, 127498, 158722, 182140, 254996, 317444, 318745, 396805, 555527, 637490, 793610, 1111054, 1274980, 1587220, 2222108, 2777635, 3888689, 5555270, 7777378, 11110540, 15554756, 19443445, 38886890, 77773780]

約数ペア:

[(1, 77773780), (2, 38886890), (4, 19443445), (5, 15554756), (7, 11110540), (10, 7777378), (14, 5555270), (20, 3888689), (28, 2777635), (35, 2222108), (49, 1587220), (61, 1274980), (70, 1111054), (98, 793610), (122, 637490), (140, 555527), (196, 396805), (244, 318745), (245, 317444), (305, 254996), (427, 182140), (490, 158722), (610, 127498), (854, 91070), (980, 79361), (1220, 63749), (1301, 59780), (1708, 45535), (2135, 36428), (2602, 29890), (2989, 26020), (4270, 18214), (5204, 14945), (5978, 13010), (6505, 11956), (8540, 9107)]