20298980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{773}}^1$

素因数の和:896

約数の個数: 48

約数和(自身を含む): 46421424

約数和(自身を除く): 26122444

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 773, 1010, 1313, 1546, 2020, 2626, 3092, 3865, 5252, 6565, 7730, 10049, 13130, 15460, 20098, 26260, 40196, 50245, 78073, 100490, 156146, 200980, 312292, 390365, 780730, 1014949, 1561460, 2029898, 4059796, 5074745, 10149490, 20298980]

約数ペア:

[(1, 20298980), (2, 10149490), (4, 5074745), (5, 4059796), (10, 2029898), (13, 1561460), (20, 1014949), (26, 780730), (52, 390365), (65, 312292), (101, 200980), (130, 156146), (202, 100490), (260, 78073), (404, 50245), (505, 40196), (773, 26260), (1010, 20098), (1313, 15460), (1546, 13130), (2020, 10049), (2626, 7730), (3092, 6565), (3865, 5252)]