400996890

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1151}}^1$

素因数の和:1257

約数の個数: 144

約数和(自身を含む): 1229230080

約数和(自身を除く): 828233190

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 79, 90, 98, 105, 126, 147, 158, 210, 237, 245, 294, 315, 395, 441, 474, 490, 553, 630, 711, 735, 790, 882, 1106, 1151, 1185, 1422, 1470, 1659, 2205, 2302, 2370, 2765, 3318, 3453, 3555, 3871, 4410, 4977, 5530, 5755, 6906, 7110, 7742, 8057, 8295, 9954, 10359, 11510, 11613, 16114, 16590, 17265, 19355, 20718, 23226, 24171, 24885, 34530, 34839, 38710, 40285, 48342, 49770, 51795, 56399, 58065, 69678, 72513, 80570, 90929, 103590, 112798, 116130, 120855, 145026, 169197, 174195, 181858, 241710, 272787, 281995, 338394, 348390, 362565, 454645, 507591, 545574, 563990, 636503, 725130, 818361, 845985, 909290, 1015182, 1273006, 1363935, 1636722, 1691970, 1909509, 2537955, 2727870, 3182515, 3819018, 4091805, 4455521, 5075910, 5728527, 6365030, 8183610, 8911042, 9547545, 11457054, 13366563, 19095090, 22277605, 26733126, 28642635, 40099689, 44555210, 57285270, 66832815, 80199378, 133665630, 200498445, 400996890]

約数ペア:

[(1, 400996890), (2, 200498445), (3, 133665630), (5, 80199378), (6, 66832815), (7, 57285270), (9, 44555210), (10, 40099689), (14, 28642635), (15, 26733126), (18, 22277605), (21, 19095090), (30, 13366563), (35, 11457054), (42, 9547545), (45, 8911042), (49, 8183610), (63, 6365030), (70, 5728527), (79, 5075910), (90, 4455521), (98, 4091805), (105, 3819018), (126, 3182515), (147, 2727870), (158, 2537955), (210, 1909509), (237, 1691970), (245, 1636722), (294, 1363935), (315, 1273006), (395, 1015182), (441, 909290), (474, 845985), (490, 818361), (553, 725130), (630, 636503), (711, 563990), (735, 545574), (790, 507591), (882, 454645), (1106, 362565), (1151, 348390), (1185, 338394), (1422, 281995), (1470, 272787), (1659, 241710), (2205, 181858), (2302, 174195), (2370, 169197), (2765, 145026), (3318, 120855), (3453, 116130), (3555, 112798), (3871, 103590), (4410, 90929), (4977, 80570), (5530, 72513), (5755, 69678), (6906, 58065), (7110, 56399), (7742, 51795), (8057, 49770), (8295, 48342), (9954, 40285), (10359, 38710), (11510, 34839), (11613, 34530), (16114, 24885), (16590, 24171), (17265, 23226), (19355, 20718)]