20498925

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 35622720

約数和(自身を除く): 15123795

約数列:

[1, 3, 5, 15, 25, 37, 75, 83, 89, 111, 185, 249, 267, 415, 445, 555, 925, 1245, 1335, 2075, 2225, 2775, 3071, 3293, 6225, 6675, 7387, 9213, 9879, 15355, 16465, 22161, 36935, 46065, 49395, 76775, 82325, 110805, 184675, 230325, 246975, 273319, 554025, 819957, 1366595, 4099785, 6832975, 20498925]

約数ペア:

[(1, 20498925), (3, 6832975), (5, 4099785), (15, 1366595), (25, 819957), (37, 554025), (75, 273319), (83, 246975), (89, 230325), (111, 184675), (185, 110805), (249, 82325), (267, 76775), (415, 49395), (445, 46065), (555, 36935), (925, 22161), (1245, 16465), (1335, 15355), (2075, 9879), (2225, 9213), (2775, 7387), (3071, 6675), (3293, 6225)]