20784059120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{761879}}^1$

素因数の和:761934

約数の個数: 80

約数和(自身を含む): 54416517120

約数和(自身を除く): 33632458000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 880, 1240, 1364, 1705, 2480, 2728, 3410, 5456, 6820, 13640, 27280, 761879, 1523758, 3047516, 3809395, 6095032, 7618790, 8380669, 12190064, 15237580, 16761338, 23618249, 30475160, 33522676, 41903345, 47236498, 60950320, 67045352, 83806690, 94472996, 118091245, 134090704, 167613380, 188945992, 236182490, 259800739, 335226760, 377891984, 472364980, 519601478, 670453520, 944729960, 1039202956, 1299003695, 1889459920, 2078405912, 2598007390, 4156811824, 5196014780, 10392029560, 20784059120]

約数ペア:

[(1, 20784059120), (2, 10392029560), (4, 5196014780), (5, 4156811824), (8, 2598007390), (10, 2078405912), (11, 1889459920), (16, 1299003695), (20, 1039202956), (22, 944729960), (31, 670453520), (40, 519601478), (44, 472364980), (55, 377891984), (62, 335226760), (80, 259800739), (88, 236182490), (110, 188945992), (124, 167613380), (155, 134090704), (176, 118091245), (220, 94472996), (248, 83806690), (310, 67045352), (341, 60950320), (440, 47236498), (496, 41903345), (620, 33522676), (682, 30475160), (880, 23618249), (1240, 16761338), (1364, 15237580), (1705, 12190064), (2480, 8380669), (2728, 7618790), (3410, 6095032), (5456, 3809395), (6820, 3047516), (13640, 1523758), (27280, 761879)]