18121725

素因数分解:

$3^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 35657440

約数和(自身を除く): 17535715

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 81, 95, 135, 157, 171, 225, 243, 285, 405, 471, 475, 513, 675, 785, 855, 1215, 1413, 1425, 1539, 2025, 2355, 2565, 2983, 3925, 4239, 4275, 4617, 6075, 7065, 7695, 8949, 11775, 12717, 12825, 14915, 21195, 23085, 26847, 35325, 38151, 38475, 44745, 63585, 74575, 80541, 105975, 115425, 134235, 190755, 223725, 241623, 317925, 402705, 671175, 724869, 953775, 1208115, 2013525, 3624345, 6040575, 18121725]

約数ペア:

[(1, 18121725), (3, 6040575), (5, 3624345), (9, 2013525), (15, 1208115), (19, 953775), (25, 724869), (27, 671175), (45, 402705), (57, 317925), (75, 241623), (81, 223725), (95, 190755), (135, 134235), (157, 115425), (171, 105975), (225, 80541), (243, 74575), (285, 63585), (405, 44745), (471, 38475), (475, 38151), (513, 35325), (675, 26847), (785, 23085), (855, 21195), (1215, 14915), (1413, 12825), (1425, 12717), (1539, 11775), (2025, 8949), (2355, 7695), (2565, 7065), (2983, 6075), (3925, 4617), (4239, 4275)]