28475720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7823}}^1$

素因数の和:7854

約数の個数: 64

約数和(自身を含む): 78865920

約数和(自身を除く): 50390200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 7823, 15646, 31292, 39115, 54761, 62584, 78230, 101699, 109522, 156460, 203398, 219044, 273805, 312920, 406796, 438088, 508495, 547610, 711893, 813592, 1016990, 1095220, 1423786, 2033980, 2190440, 2847572, 3559465, 4067960, 5695144, 7118930, 14237860, 28475720]

約数ペア:

[(1, 28475720), (2, 14237860), (4, 7118930), (5, 5695144), (7, 4067960), (8, 3559465), (10, 2847572), (13, 2190440), (14, 2033980), (20, 1423786), (26, 1095220), (28, 1016990), (35, 813592), (40, 711893), (52, 547610), (56, 508495), (65, 438088), (70, 406796), (91, 312920), (104, 273805), (130, 219044), (140, 203398), (182, 156460), (260, 109522), (280, 101699), (364, 78230), (455, 62584), (520, 54761), (728, 39115), (910, 31292), (1820, 15646), (3640, 7823)]