21424420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1033}}^1$

素因数の和:1120

約数の個数: 48

約数和(自身を含む): 48465648

約数和(自身を除く): 27041228

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 61, 68, 85, 122, 170, 244, 305, 340, 610, 1033, 1037, 1220, 2066, 2074, 4132, 4148, 5165, 5185, 10330, 10370, 17561, 20660, 20740, 35122, 63013, 70244, 87805, 126026, 175610, 252052, 315065, 351220, 630130, 1071221, 1260260, 2142442, 4284884, 5356105, 10712210, 21424420]

約数ペア:

[(1, 21424420), (2, 10712210), (4, 5356105), (5, 4284884), (10, 2142442), (17, 1260260), (20, 1071221), (34, 630130), (61, 351220), (68, 315065), (85, 252052), (122, 175610), (170, 126026), (244, 87805), (305, 70244), (340, 63013), (610, 35122), (1033, 20740), (1037, 20660), (1220, 17561), (2066, 10370), (2074, 10330), (4132, 5185), (4148, 5165)]