401720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{83}}^1$

素因数の和:116

約数の個数: 48

約数和(自身を含む): 1005480

約数和(自身を除く): 603760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 83, 88, 110, 121, 166, 220, 242, 332, 415, 440, 484, 605, 664, 830, 913, 968, 1210, 1660, 1826, 2420, 3320, 3652, 4565, 4840, 7304, 9130, 10043, 18260, 20086, 36520, 40172, 50215, 80344, 100430, 200860, 401720]

約数ペア:

[(1, 401720), (2, 200860), (4, 100430), (5, 80344), (8, 50215), (10, 40172), (11, 36520), (20, 20086), (22, 18260), (40, 10043), (44, 9130), (55, 7304), (83, 4840), (88, 4565), (110, 3652), (121, 3320), (166, 2420), (220, 1826), (242, 1660), (332, 1210), (415, 968), (440, 913), (484, 830), (605, 664)]