28795520

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3461}}^1$

素因数の和:3493

約数の個数: 64

約数和(自身を含む): 74156040

約数和(自身を除く): 45360520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 3461, 4160, 6922, 8320, 13844, 17305, 27688, 34610, 44993, 55376, 69220, 89986, 110752, 138440, 179972, 221504, 224965, 276880, 359944, 443008, 449930, 553760, 719888, 899860, 1107520, 1439776, 1799720, 2215040, 2879552, 3599440, 5759104, 7198880, 14397760, 28795520]

約数ペア:

[(1, 28795520), (2, 14397760), (4, 7198880), (5, 5759104), (8, 3599440), (10, 2879552), (13, 2215040), (16, 1799720), (20, 1439776), (26, 1107520), (32, 899860), (40, 719888), (52, 553760), (64, 449930), (65, 443008), (80, 359944), (104, 276880), (128, 224965), (130, 221504), (160, 179972), (208, 138440), (260, 110752), (320, 89986), (416, 69220), (520, 55376), (640, 44993), (832, 34610), (1040, 27688), (1664, 17305), (2080, 13844), (3461, 8320), (4160, 6922)]