28870980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20921}}^1$

素因数の和:20956

約数の個数: 48

約数和(自身を含む): 84357504

約数和(自身を除く): 55486524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 20921, 41842, 62763, 83684, 104605, 125526, 209210, 251052, 313815, 418420, 481183, 627630, 962366, 1255260, 1443549, 1924732, 2405915, 2887098, 4811830, 5774196, 7217745, 9623660, 14435490, 28870980]

約数ペア:

[(1, 28870980), (2, 14435490), (3, 9623660), (4, 7217745), (5, 5774196), (6, 4811830), (10, 2887098), (12, 2405915), (15, 1924732), (20, 1443549), (23, 1255260), (30, 962366), (46, 627630), (60, 481183), (69, 418420), (92, 313815), (115, 251052), (138, 209210), (230, 125526), (276, 104605), (345, 83684), (460, 62763), (690, 41842), (1380, 20921)]