31781330360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1\times {\mathrm{61673}}^1$

素因数の和:62688

約数の個数: 64

約数和(自身を含む): 77087566080

約数和(自身を除く): 45306235720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 991, 1982, 3964, 4955, 7928, 9910, 12883, 19820, 25766, 39640, 51532, 61673, 64415, 103064, 123346, 128830, 246692, 257660, 308365, 493384, 515320, 616730, 801749, 1233460, 1603498, 2466920, 3206996, 4008745, 6413992, 8017490, 16034980, 32069960, 61117943, 122235886, 244471772, 305589715, 488943544, 611179430, 794533259, 1222358860, 1589066518, 2444717720, 3178133036, 3972666295, 6356266072, 7945332590, 15890665180, 31781330360]

約数ペア:

[(1, 31781330360), (2, 15890665180), (4, 7945332590), (5, 6356266072), (8, 3972666295), (10, 3178133036), (13, 2444717720), (20, 1589066518), (26, 1222358860), (40, 794533259), (52, 611179430), (65, 488943544), (104, 305589715), (130, 244471772), (260, 122235886), (520, 61117943), (991, 32069960), (1982, 16034980), (3964, 8017490), (4955, 6413992), (7928, 4008745), (9910, 3206996), (12883, 2466920), (19820, 1603498), (25766, 1233460), (39640, 801749), (51532, 616730), (61673, 515320), (64415, 493384), (103064, 308365), (123346, 257660), (128830, 246692)]