18961425

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{4013}}^1$

素因数の和:4039

約数の個数: 48

約数和(自身を含む): 39818880

約数和(自身を除く): 20857455

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 525, 675, 945, 1575, 4013, 4725, 12039, 20065, 28091, 36117, 60195, 84273, 100325, 108351, 140455, 180585, 252819, 300975, 421365, 541755, 702275, 758457, 902925, 1264095, 2106825, 2708775, 3792285, 6320475, 18961425]

約数ペア:

[(1, 18961425), (3, 6320475), (5, 3792285), (7, 2708775), (9, 2106825), (15, 1264095), (21, 902925), (25, 758457), (27, 702275), (35, 541755), (45, 421365), (63, 300975), (75, 252819), (105, 180585), (135, 140455), (175, 108351), (189, 100325), (225, 84273), (315, 60195), (525, 36117), (675, 28091), (945, 20065), (1575, 12039), (4013, 4725)]