1286769720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{353}}^1\times {\mathrm{821}}^1$

素因数の和:1225

約数の個数: 128

約数和(自身を含む): 3980715840

約数和(自身を除く): 2693946120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 148, 185, 222, 296, 353, 370, 444, 555, 706, 740, 821, 888, 1059, 1110, 1412, 1480, 1642, 1765, 2118, 2220, 2463, 2824, 3284, 3530, 4105, 4236, 4440, 4926, 5295, 6568, 7060, 8210, 8472, 9852, 10590, 12315, 13061, 14120, 16420, 19704, 21180, 24630, 26122, 30377, 32840, 39183, 42360, 49260, 52244, 60754, 65305, 78366, 91131, 98520, 104488, 121508, 130610, 151885, 156732, 182262, 195915, 243016, 261220, 289813, 303770, 313464, 364524, 391830, 455655, 522440, 579626, 607540, 729048, 783660, 869439, 911310, 1159252, 1215080, 1449065, 1567320, 1738878, 1822620, 2318504, 2898130, 3477756, 3645240, 4347195, 5796260, 6955512, 8694390, 10723081, 11592520, 17388780, 21446162, 32169243, 34777560, 42892324, 53615405, 64338486, 85784648, 107230810, 128676972, 160846215, 214461620, 257353944, 321692430, 428923240, 643384860, 1286769720]

約数ペア:

[(1, 1286769720), (2, 643384860), (3, 428923240), (4, 321692430), (5, 257353944), (6, 214461620), (8, 160846215), (10, 128676972), (12, 107230810), (15, 85784648), (20, 64338486), (24, 53615405), (30, 42892324), (37, 34777560), (40, 32169243), (60, 21446162), (74, 17388780), (111, 11592520), (120, 10723081), (148, 8694390), (185, 6955512), (222, 5796260), (296, 4347195), (353, 3645240), (370, 3477756), (444, 2898130), (555, 2318504), (706, 1822620), (740, 1738878), (821, 1567320), (888, 1449065), (1059, 1215080), (1110, 1159252), (1412, 911310), (1480, 869439), (1642, 783660), (1765, 729048), (2118, 607540), (2220, 579626), (2463, 522440), (2824, 455655), (3284, 391830), (3530, 364524), (4105, 313464), (4236, 303770), (4440, 289813), (4926, 261220), (5295, 243016), (6568, 195915), (7060, 182262), (8210, 156732), (8472, 151885), (9852, 130610), (10590, 121508), (12315, 104488), (13061, 98520), (14120, 91131), (16420, 78366), (19704, 65305), (21180, 60754), (24630, 52244), (26122, 49260), (30377, 42360), (32840, 39183)]