7842940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{151}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 19649952

約数和(自身を除く): 11807012

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 53, 70, 98, 106, 140, 151, 196, 212, 245, 265, 302, 371, 490, 530, 604, 742, 755, 980, 1057, 1060, 1484, 1510, 1855, 2114, 2597, 3020, 3710, 4228, 5194, 5285, 7399, 7420, 8003, 10388, 10570, 12985, 14798, 16006, 21140, 25970, 29596, 32012, 36995, 40015, 51940, 56021, 73990, 80030, 112042, 147980, 160060, 224084, 280105, 392147, 560210, 784294, 1120420, 1568588, 1960735, 3921470, 7842940]

約数ペア:

[(1, 7842940), (2, 3921470), (4, 1960735), (5, 1568588), (7, 1120420), (10, 784294), (14, 560210), (20, 392147), (28, 280105), (35, 224084), (49, 160060), (53, 147980), (70, 112042), (98, 80030), (106, 73990), (140, 56021), (151, 51940), (196, 40015), (212, 36995), (245, 32012), (265, 29596), (302, 25970), (371, 21140), (490, 16006), (530, 14798), (604, 12985), (742, 10570), (755, 10388), (980, 8003), (1057, 7420), (1060, 7399), (1484, 5285), (1510, 5194), (1855, 4228), (2114, 3710), (2597, 3020)]