21031396020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{937}}^1\times {\mathrm{6563}}^1$

素因数の和:7534

約数の個数: 144

約数和(自身を含む): 67234789440

約数和(自身を除く): 46203393420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 937, 1140, 1710, 1874, 2811, 3420, 3748, 4685, 5622, 6563, 8433, 9370, 11244, 13126, 14055, 16866, 17803, 18740, 19689, 26252, 28110, 32815, 33732, 35606, 39378, 42165, 53409, 56220, 59067, 65630, 71212, 78756, 84330, 89015, 98445, 106818, 118134, 124697, 131260, 160227, 168660, 178030, 196890, 213636, 236268, 249394, 267045, 295335, 320454, 356060, 374091, 393780, 498788, 534090, 590670, 623485, 640908, 748182, 801135, 1068180, 1122273, 1181340, 1246970, 1496364, 1602270, 1870455, 2244546, 2493940, 3204540, 3740910, 4489092, 5611365, 6149531, 7481820, 11222730, 12299062, 18448593, 22445460, 24598124, 30747655, 36897186, 55345779, 61495310, 73794372, 92242965, 110691558, 116841089, 122990620, 184485930, 221383116, 233682178, 276728895, 350523267, 368971860, 467364356, 553457790, 584205445, 701046534, 1051569801, 1106915580, 1168410890, 1402093068, 1752616335, 2103139602, 2336821780, 3505232670, 4206279204, 5257849005, 7010465340, 10515698010, 21031396020]

約数ペア:

[(1, 21031396020), (2, 10515698010), (3, 7010465340), (4, 5257849005), (5, 4206279204), (6, 3505232670), (9, 2336821780), (10, 2103139602), (12, 1752616335), (15, 1402093068), (18, 1168410890), (19, 1106915580), (20, 1051569801), (30, 701046534), (36, 584205445), (38, 553457790), (45, 467364356), (57, 368971860), (60, 350523267), (76, 276728895), (90, 233682178), (95, 221383116), (114, 184485930), (171, 122990620), (180, 116841089), (190, 110691558), (228, 92242965), (285, 73794372), (342, 61495310), (380, 55345779), (570, 36897186), (684, 30747655), (855, 24598124), (937, 22445460), (1140, 18448593), (1710, 12299062), (1874, 11222730), (2811, 7481820), (3420, 6149531), (3748, 5611365), (4685, 4489092), (5622, 3740910), (6563, 3204540), (8433, 2493940), (9370, 2244546), (11244, 1870455), (13126, 1602270), (14055, 1496364), (16866, 1246970), (17803, 1181340), (18740, 1122273), (19689, 1068180), (26252, 801135), (28110, 748182), (32815, 640908), (33732, 623485), (35606, 590670), (39378, 534090), (42165, 498788), (53409, 393780), (56220, 374091), (59067, 356060), (65630, 320454), (71212, 295335), (78756, 267045), (84330, 249394), (89015, 236268), (98445, 213636), (106818, 196890), (118134, 178030), (124697, 168660), (131260, 160227)]