18870444

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{457}}^1$

素因数の和:535

約数の個数: 72

約数和(自身を含む): 50680448

約数和(自身を除く): 31810004

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 37, 62, 74, 93, 111, 124, 148, 186, 222, 279, 333, 372, 444, 457, 558, 666, 914, 1116, 1147, 1332, 1371, 1828, 2294, 2742, 3441, 4113, 4588, 5484, 6882, 8226, 10323, 13764, 14167, 16452, 16909, 20646, 28334, 33818, 41292, 42501, 50727, 56668, 67636, 85002, 101454, 127503, 152181, 170004, 202908, 255006, 304362, 510012, 524179, 608724, 1048358, 1572537, 2096716, 3145074, 4717611, 6290148, 9435222, 18870444]

約数ペア:

[(1, 18870444), (2, 9435222), (3, 6290148), (4, 4717611), (6, 3145074), (9, 2096716), (12, 1572537), (18, 1048358), (31, 608724), (36, 524179), (37, 510012), (62, 304362), (74, 255006), (93, 202908), (111, 170004), (124, 152181), (148, 127503), (186, 101454), (222, 85002), (279, 67636), (333, 56668), (372, 50727), (444, 42501), (457, 41292), (558, 33818), (666, 28334), (914, 20646), (1116, 16909), (1147, 16452), (1332, 14167), (1371, 13764), (1828, 10323), (2294, 8226), (2742, 6882), (3441, 5484), (4113, 4588)]