154989940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1777}}^1$

素因数の和:1889

約数の個数: 72

約数和(自身を含む): 383087880

約数和(自身を除く): 228097940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 196, 245, 356, 445, 490, 623, 890, 980, 1246, 1777, 1780, 2492, 3115, 3554, 4361, 6230, 7108, 8722, 8885, 12439, 12460, 17444, 17770, 21805, 24878, 35540, 43610, 49756, 62195, 87073, 87220, 124390, 158153, 174146, 248780, 316306, 348292, 435365, 632612, 790765, 870730, 1107071, 1581530, 1741460, 2214142, 3163060, 4428284, 5535355, 7749497, 11070710, 15498994, 22141420, 30997988, 38747485, 77494970, 154989940]

約数ペア:

[(1, 154989940), (2, 77494970), (4, 38747485), (5, 30997988), (7, 22141420), (10, 15498994), (14, 11070710), (20, 7749497), (28, 5535355), (35, 4428284), (49, 3163060), (70, 2214142), (89, 1741460), (98, 1581530), (140, 1107071), (178, 870730), (196, 790765), (245, 632612), (356, 435365), (445, 348292), (490, 316306), (623, 248780), (890, 174146), (980, 158153), (1246, 124390), (1777, 87220), (1780, 87073), (2492, 62195), (3115, 49756), (3554, 43610), (4361, 35540), (6230, 24878), (7108, 21805), (8722, 17770), (8885, 17444), (12439, 12460)]