21548280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:773

約数の個数: 128

約数和(自身を含む): 73382400

約数和(自身を除く): 51834120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 19, 20, 24, 26, 30, 38, 39, 40, 52, 57, 60, 65, 76, 78, 95, 104, 114, 120, 130, 152, 156, 190, 195, 228, 247, 260, 285, 312, 380, 390, 456, 494, 520, 570, 727, 741, 760, 780, 988, 1140, 1235, 1454, 1482, 1560, 1976, 2181, 2280, 2470, 2908, 2964, 3635, 3705, 4362, 4940, 5816, 5928, 7270, 7410, 8724, 9451, 9880, 10905, 13813, 14540, 14820, 17448, 18902, 21810, 27626, 28353, 29080, 29640, 37804, 41439, 43620, 47255, 55252, 56706, 69065, 75608, 82878, 87240, 94510, 110504, 113412, 138130, 141765, 165756, 179569, 189020, 207195, 226824, 276260, 283530, 331512, 359138, 378040, 414390, 538707, 552520, 567060, 718276, 828780, 897845, 1077414, 1134120, 1436552, 1657560, 1795690, 2154828, 2693535, 3591380, 4309656, 5387070, 7182760, 10774140, 21548280]

約数ペア:

[(1, 21548280), (2, 10774140), (3, 7182760), (4, 5387070), (5, 4309656), (6, 3591380), (8, 2693535), (10, 2154828), (12, 1795690), (13, 1657560), (15, 1436552), (19, 1134120), (20, 1077414), (24, 897845), (26, 828780), (30, 718276), (38, 567060), (39, 552520), (40, 538707), (52, 414390), (57, 378040), (60, 359138), (65, 331512), (76, 283530), (78, 276260), (95, 226824), (104, 207195), (114, 189020), (120, 179569), (130, 165756), (152, 141765), (156, 138130), (190, 113412), (195, 110504), (228, 94510), (247, 87240), (260, 82878), (285, 75608), (312, 69065), (380, 56706), (390, 55252), (456, 47255), (494, 43620), (520, 41439), (570, 37804), (727, 29640), (741, 29080), (760, 28353), (780, 27626), (988, 21810), (1140, 18902), (1235, 17448), (1454, 14820), (1482, 14540), (1560, 13813), (1976, 10905), (2181, 9880), (2280, 9451), (2470, 8724), (2908, 7410), (2964, 7270), (3635, 5928), (3705, 5816), (4362, 4940)]