28263320

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1056

約数の個数: 64

約数和(自身を含む): 68567040

約数和(自身を除く): 40303720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 46, 62, 92, 115, 124, 155, 184, 230, 248, 310, 460, 620, 713, 920, 991, 1240, 1426, 1982, 2852, 3565, 3964, 4955, 5704, 7130, 7928, 9910, 14260, 19820, 22793, 28520, 30721, 39640, 45586, 61442, 91172, 113965, 122884, 153605, 182344, 227930, 245768, 307210, 455860, 614420, 706583, 911720, 1228840, 1413166, 2826332, 3532915, 5652664, 7065830, 14131660, 28263320]

約数ペア:

[(1, 28263320), (2, 14131660), (4, 7065830), (5, 5652664), (8, 3532915), (10, 2826332), (20, 1413166), (23, 1228840), (31, 911720), (40, 706583), (46, 614420), (62, 455860), (92, 307210), (115, 245768), (124, 227930), (155, 182344), (184, 153605), (230, 122884), (248, 113965), (310, 91172), (460, 61442), (620, 45586), (713, 39640), (920, 30721), (991, 28520), (1240, 22793), (1426, 19820), (1982, 14260), (2852, 9910), (3565, 7928), (3964, 7130), (4955, 5704)]