261248520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9851}}^1$

素因数の和:9895

約数の個数: 128

約数和(自身を含む): 893773440

約数和(自身を除く): 632524920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 17, 20, 24, 26, 30, 34, 39, 40, 51, 52, 60, 65, 68, 78, 85, 102, 104, 120, 130, 136, 156, 170, 195, 204, 221, 255, 260, 312, 340, 390, 408, 442, 510, 520, 663, 680, 780, 884, 1020, 1105, 1326, 1560, 1768, 2040, 2210, 2652, 3315, 4420, 5304, 6630, 8840, 9851, 13260, 19702, 26520, 29553, 39404, 49255, 59106, 78808, 98510, 118212, 128063, 147765, 167467, 197020, 236424, 256126, 295530, 334934, 384189, 394040, 502401, 512252, 591060, 640315, 669868, 768378, 837335, 1004802, 1024504, 1182120, 1280630, 1339736, 1536756, 1674670, 1920945, 2009604, 2177071, 2512005, 2561260, 3073512, 3349340, 3841890, 4019208, 4354142, 5024010, 5122520, 6531213, 6698680, 7683780, 8708284, 10048020, 10885355, 13062426, 15367560, 17416568, 20096040, 21770710, 26124852, 32656065, 43541420, 52249704, 65312130, 87082840, 130624260, 261248520]

約数ペア:

[(1, 261248520), (2, 130624260), (3, 87082840), (4, 65312130), (5, 52249704), (6, 43541420), (8, 32656065), (10, 26124852), (12, 21770710), (13, 20096040), (15, 17416568), (17, 15367560), (20, 13062426), (24, 10885355), (26, 10048020), (30, 8708284), (34, 7683780), (39, 6698680), (40, 6531213), (51, 5122520), (52, 5024010), (60, 4354142), (65, 4019208), (68, 3841890), (78, 3349340), (85, 3073512), (102, 2561260), (104, 2512005), (120, 2177071), (130, 2009604), (136, 1920945), (156, 1674670), (170, 1536756), (195, 1339736), (204, 1280630), (221, 1182120), (255, 1024504), (260, 1004802), (312, 837335), (340, 768378), (390, 669868), (408, 640315), (442, 591060), (510, 512252), (520, 502401), (663, 394040), (680, 384189), (780, 334934), (884, 295530), (1020, 256126), (1105, 236424), (1326, 197020), (1560, 167467), (1768, 147765), (2040, 128063), (2210, 118212), (2652, 98510), (3315, 78808), (4420, 59106), (5304, 49255), (6630, 39404), (8840, 29553), (9851, 26520), (13260, 19702)]