28383880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:191

約数の個数: 128

約数和(自身を含む): 79315200

約数和(自身を除く): 50931320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 67, 68, 70, 85, 89, 119, 134, 136, 140, 170, 178, 238, 268, 280, 335, 340, 356, 445, 469, 476, 536, 595, 623, 670, 680, 712, 890, 938, 952, 1139, 1190, 1246, 1340, 1513, 1780, 1876, 2278, 2345, 2380, 2492, 2680, 3026, 3115, 3560, 3752, 4556, 4690, 4760, 4984, 5695, 5963, 6052, 6230, 7565, 7973, 9112, 9380, 10591, 11390, 11926, 12104, 12460, 15130, 15946, 18760, 21182, 22780, 23852, 24920, 29815, 30260, 31892, 39865, 41741, 42364, 45560, 47704, 52955, 59630, 60520, 63784, 79730, 83482, 84728, 101371, 105910, 119260, 159460, 166964, 202742, 208705, 211820, 238520, 318920, 333928, 405484, 417410, 423640, 506855, 709597, 810968, 834820, 1013710, 1419194, 1669640, 2027420, 2838388, 3547985, 4054840, 5676776, 7095970, 14191940, 28383880]

約数ペア:

[(1, 28383880), (2, 14191940), (4, 7095970), (5, 5676776), (7, 4054840), (8, 3547985), (10, 2838388), (14, 2027420), (17, 1669640), (20, 1419194), (28, 1013710), (34, 834820), (35, 810968), (40, 709597), (56, 506855), (67, 423640), (68, 417410), (70, 405484), (85, 333928), (89, 318920), (119, 238520), (134, 211820), (136, 208705), (140, 202742), (170, 166964), (178, 159460), (238, 119260), (268, 105910), (280, 101371), (335, 84728), (340, 83482), (356, 79730), (445, 63784), (469, 60520), (476, 59630), (536, 52955), (595, 47704), (623, 45560), (670, 42364), (680, 41741), (712, 39865), (890, 31892), (938, 30260), (952, 29815), (1139, 24920), (1190, 23852), (1246, 22780), (1340, 21182), (1513, 18760), (1780, 15946), (1876, 15130), (2278, 12460), (2345, 12104), (2380, 11926), (2492, 11390), (2680, 10591), (3026, 9380), (3115, 9112), (3560, 7973), (3752, 7565), (4556, 6230), (4690, 6052), (4760, 5963), (4984, 5695)]