21305340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{457}}^1$

素因数の和:516

約数の個数: 144

約数和(自身を含む): 76020672

約数和(自身を除く): 54715332

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 37, 42, 45, 60, 63, 70, 74, 84, 90, 105, 111, 126, 140, 148, 180, 185, 210, 222, 252, 259, 315, 333, 370, 420, 444, 457, 518, 555, 630, 666, 740, 777, 914, 1036, 1110, 1260, 1295, 1332, 1371, 1554, 1665, 1828, 2220, 2285, 2331, 2590, 2742, 3108, 3199, 3330, 3885, 4113, 4570, 4662, 5180, 5484, 6398, 6660, 6855, 7770, 8226, 9140, 9324, 9597, 11655, 12796, 13710, 15540, 15995, 16452, 16909, 19194, 20565, 23310, 27420, 28791, 31990, 33818, 38388, 41130, 46620, 47985, 50727, 57582, 63980, 67636, 82260, 84545, 95970, 101454, 115164, 118363, 143955, 152181, 169090, 191940, 202908, 236726, 253635, 287910, 304362, 338180, 355089, 473452, 507270, 575820, 591815, 608724, 710178, 760905, 1014540, 1065267, 1183630, 1420356, 1521810, 1775445, 2130534, 2367260, 3043620, 3550890, 4261068, 5326335, 7101780, 10652670, 21305340]

約数ペア:

[(1, 21305340), (2, 10652670), (3, 7101780), (4, 5326335), (5, 4261068), (6, 3550890), (7, 3043620), (9, 2367260), (10, 2130534), (12, 1775445), (14, 1521810), (15, 1420356), (18, 1183630), (20, 1065267), (21, 1014540), (28, 760905), (30, 710178), (35, 608724), (36, 591815), (37, 575820), (42, 507270), (45, 473452), (60, 355089), (63, 338180), (70, 304362), (74, 287910), (84, 253635), (90, 236726), (105, 202908), (111, 191940), (126, 169090), (140, 152181), (148, 143955), (180, 118363), (185, 115164), (210, 101454), (222, 95970), (252, 84545), (259, 82260), (315, 67636), (333, 63980), (370, 57582), (420, 50727), (444, 47985), (457, 46620), (518, 41130), (555, 38388), (630, 33818), (666, 31990), (740, 28791), (777, 27420), (914, 23310), (1036, 20565), (1110, 19194), (1260, 16909), (1295, 16452), (1332, 15995), (1371, 15540), (1554, 13710), (1665, 12796), (1828, 11655), (2220, 9597), (2285, 9324), (2331, 9140), (2590, 8226), (2742, 7770), (3108, 6855), (3199, 6660), (3330, 6398), (3885, 5484), (4113, 5180), (4570, 4662)]