31921425

素因数分解:

$3^3\times 5^2\times {\mathrm{19}}^2\times {\mathrm{131}}^1$

素因数の和:188

約数の個数: 72

約数和(自身を含む): 62362080

約数和(自身を除く): 30440655

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 95, 131, 135, 171, 225, 285, 361, 393, 475, 513, 655, 675, 855, 1083, 1179, 1425, 1805, 1965, 2489, 2565, 3249, 3275, 3537, 4275, 5415, 5895, 7467, 9025, 9747, 9825, 12445, 12825, 16245, 17685, 22401, 27075, 29475, 37335, 47291, 48735, 62225, 67203, 81225, 88425, 112005, 141873, 186675, 236455, 243675, 336015, 425619, 560025, 709365, 1182275, 1276857, 1680075, 2128095, 3546825, 6384285, 10640475, 31921425]

約数ペア:

[(1, 31921425), (3, 10640475), (5, 6384285), (9, 3546825), (15, 2128095), (19, 1680075), (25, 1276857), (27, 1182275), (45, 709365), (57, 560025), (75, 425619), (95, 336015), (131, 243675), (135, 236455), (171, 186675), (225, 141873), (285, 112005), (361, 88425), (393, 81225), (475, 67203), (513, 62225), (655, 48735), (675, 47291), (855, 37335), (1083, 29475), (1179, 27075), (1425, 22401), (1805, 17685), (1965, 16245), (2489, 12825), (2565, 12445), (3249, 9825), (3275, 9747), (3537, 9025), (4275, 7467), (5415, 5895)]